如何将部分 php 代码放入 wordpress 简码
How to put part of php code into wordpress shortcode
我有一个 wordpress 插件，可以让我上传用户头像。我正在尝试获取一段显示缩略图的代码并将其放入短代码中，以便我可以将缩略图放置在网站的任何位置。
我对 php 比较陌生，我知道如何为 wordpress 启动短代码，但我不知道如何构建短代码以托管 php。有好心人给我提建议吗？
以下代码php为插件文件原文：
<?php
/**
* Defines all profile and upload settings.
*
* @package One User Avatar
* @author Bangbay Siboliban
* @author Flippercode
* @author ProfilePress
* @author One Designs
* @copyright 2013-2014 Bangbay Siboliban
* @copyright 2014-2020 Flippercode
* @copyright 2020-2021 ProfilePress
* @copyright 2021 One Designs
* @version 2.3.9
*/
class WP_User_Avatar {
/**
* Constructor
* @since 1.8
* @uses string $pagenow
* @uses bool $show_avatars
* @uses object $wpua_admin
* @uses bool $wpua_allow_upload
* @uses add_action()
* @uses add_filterI]()
* @uses is_admin()
* @uses is_user_logged_in()
* @uses wpua_is_author_or_above()
* @uses wpua_is_menu_page()
*/
public function __construct() {
global $pagenow, $show_avatars, $wpua_admin, $wpua_allow_upload;
// Add WPUA to profile for users with permission
if ( $this->wpua_is_author_or_above() || ( 1 == (bool) $wpua_allow_upload && is_user_logged_in() ) ) {
// Profile functions and scripts
add_action( 'show_user_profile', array( $this, 'wpua_maybe_show_user_profile' ) );
add_action( 'edit_user_profile', array( $this, 'wpua_maybe_show_user_profile' ) );
add_action( 'personal_options_update', array( $this, 'wpua_action_process_option_update' ) );
add_action( 'edit_user_profile_update', array( $this, 'wpua_action_process_option_update' ) );
add_action( 'user_new_form', array( $this, 'wpua_action_show_user_profile' ) );
add_action( 'user_register', array( $this, 'wpua_action_process_option_update' ) );
add_filter( 'user_profile_picture_description', array( $this, 'wpua_description_show_user_profile' ), PHP_INT_MAX, 2 );
// Admin scripts
$pages = array( 'profile.php', 'options-discussion.php', 'user-edit.php', 'user-new.php', 'admin.php' );
if ( in_array( $pagenow, $pages ) || $wpua_admin->wpua_is_menu_page() ) {
add_action( 'admin_enqueue_scripts', array( $this, 'wpua_media_upload_scripts' ) );
}
// Front pages
if ( ! is_admin() ) {
add_action( 'show_user_profile', array( 'wp_user_avatar', 'wpua_media_upload_scripts' ) );
add_action( 'edit_user_profile', array( 'wp_user_avatar', 'wpua_media_upload_scripts' ) );
}
if ( ! $this->wpua_is_author_or_above() ) {
// Upload errors
add_action( 'user_profile_update_errors', array( $this, 'wpua_upload_errors' ), 10, 3 );
// Prefilter upload size
add_filter( 'wp_handle_upload_prefilter', array( $this, 'wpua_handle_upload_prefilter' ) );
}
}
add_filter( 'media_view_settings', array( $this, 'wpua_media_view_settings' ), 10, 1 );
}
/**
* Avatars have no parent posts
*
* @param array $settings
*
* @return array
* @uses object $post
* @uses bool $wpua_is_profile
* @uses is_admin()
* array $settings
* @since 1.8.4
*/
public function wpua_media_view_settings( $settings ) {
global $post, $wpua_is_profile;
// Get post ID so not to interfere with media uploads
$post_id = is_object( $post ) ? $post->ID : 0;
// Don't use post ID on front pages if there's a WPUA uploader
$settings['post']['id'] = ( ! is_admin() && 1 == $wpua_is_profile ) ? 0 : $post_id;
return $settings;
}
/**
* Media Uploader
* @since 1.4
* @param object $user
* @uses object $current_user
* @uses string $mustache_admin
* @uses string $pagenow
* @uses object $post
* @uses bool $show_avatars
* @uses object $wp_user_avatar
* @uses object $wpua_admin
* @uses object $wpua_functions
* @uses bool $wpua_is_profile
* @uses int $wpua_upload_size_limit
* @uses get_user_by()
* @uses wp_enqueue_script()
* @uses wp_enqueue_media()
* @uses wp_enqueue_style()
* @uses wp_localize_script()
* @uses wp_max_upload_size()
* @uses wpua_get_avatar_original()
* @uses wpua_is_author_or_above()
* @uses wpua_is_menu_page()
*/
public static function wpua_media_upload_scripts( $user = '' ) {
global $current_user,
$mustache_admin,
$pagenow,
$plugin_page,
$post,
$show_avatars,
$wp_user_avatar,
$wpua_force_file_uploader,
$wpua_admin,
$wpua_functions,
$wpua_is_profile,
$wpua_upload_size_limit;
// This is a profile page
$wpua_is_profile = 1;
$user = ( $pagenow == 'user-edit.php' && isset( $_GET['user_id'] ) ) ? get_user_by( 'id', absint( $_GET['user_id'] ) ) : $current_user;
wp_enqueue_style( 'wp-user-avatar', WPUA_CSS_URL . 'wp-user-avatar.css', '', WPUA_VERSION );
wp_enqueue_script( 'jquery' );
if ( ( $wp_user_avatar->wpua_is_author_or_above() && ! $wpua_force_file_uploader ) || 'options-discussion.php' == $pagenow ) {
wp_enqueue_script( 'admin-bar' );
wp_enqueue_media( array( 'post' => $post ) );
wp_enqueue_script( 'wp-user-avatar', WPUA_JS_URL . 'wp-user-avatar.js', array( 'jquery', 'media-editor' ), WPUA_VERSION, true );
} else {
wp_enqueue_script( 'wp-user-avatar', WPUA_JS_URL . 'wp-user-avatar-user.js', array( 'jquery' ), WPUA_VERSION, true );
}
// Admin scripts
if ( 'options-discussion.php' == $pagenow || $wpua_admin->wpua_is_menu_page() ) {
wp_localize_script( 'wp-user-avatar', 'wpua_custom', array(
'avatar_thumb' => $mustache_admin,
) );
}
if (
'options-discussion.php' == $pagenow
||
$wpua_admin->wpua_is_menu_page()
||
(
'admin.php' == $pagenow
&&
isset( $plugin_page )
&&
'wp-user-avatar-library' == $plugin_page
)
) {
// Settings control
wp_enqueue_script( 'wp-user-avatar-admin', WPUA_JS_URL . 'wp-user-avatar-admin.js', array( 'wp-user-avatar' ), WPUA_VERSION, true );
wp_localize_script( 'wp-user-avatar-admin', 'wpua_admin', array(
'upload_size_limit' => $wpua_upload_size_limit,
'max_upload_size' => wp_max_upload_size(),
) );
} else {
// Original user avatar
$avatar_medium_src = 1 == (bool) $show_avatars ? $wpua_functions->wpua_get_avatar_original( $user->user_email, 'medium' ) : includes_url() . 'images/blank.gif';
wp_localize_script( 'wp-user-avatar', 'wpua_custom', array(
'avatar_thumb' => $avatar_medium_src,
) );
}
}
public static function wpua_core_show_user_profile( $user ) {
global $blog_id,
$current_user,
$show_avatars,
$wpdb,
$wp_user_avatar,
$wpua_force_file_uploader,
$wpua_edit_avatar,
$wpua_functions,
$wpua_upload_size_limit_with_units;
$has_wp_user_avatar = has_wp_user_avatar( @$user->ID );
// Get WPUA attachment ID
$wpua = get_user_meta( @$user->ID, $wpdb->get_blog_prefix( $blog_id ) . 'user_avatar', true );
// Show remove button if WPUA is set
$hide_remove = ! $has_wp_user_avatar ? 'wpua-hide' : '';
// Hide image tags if show avatars is off
$hide_images = ! $has_wp_user_avatar && 0 == (bool) $show_avatars ? 'wpua-no-avatars' : '';
// If avatars are enabled, get original avatar image or show blank
$avatar_medium_src = 1 == (bool) $show_avatars ? $wpua_functions->wpua_get_avatar_original( @$user->user_email, 'medium' ) : includes_url() . 'images/blank.gif';
// Check if user has wp_user_avatar, if not show image from above
$avatar_medium = $has_wp_user_avatar ? get_wp_user_avatar_src( $user->ID, 'medium' ) : $avatar_medium_src;
// Check if user has wp_user_avatar, if not show image from above
$avatar_thumbnail = $has_wp_user_avatar ? get_wp_user_avatar_src( $user->ID, 96 ) : $avatar_medium_src;
$edit_attachment_link = esc_url( add_query_arg( array(
'post' => $wpua,
'action' => 'edit',
), admin_url( 'post.php' ) ) );
?>
<input type="hidden" name="wp-user-avatar" id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wp-user-avatar' : 'wp-user-avatar-existing' ) ?>" value="<?php echo esc_attr( $wpua ); ?>" />
<?php
if ( $wp_user_avatar->wpua_is_author_or_above() && ! $wpua_force_file_uploader ) :
// Button to launch Media Uploader
?>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-add-button' : 'wpua-add-button-existing' ); ?>">
<button
type="button"
class="button"
id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-add' : 'wpua-add-existing' ); ?>"
name="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-add' : 'wpua-add-existing' ); ?>"
data-title="<?php printf(
/* translators: user display name */
__( 'Choose Image: %s', 'one-user-avatar' ),
( ! empty( $user->display_name ) ? esc_attr( $user->display_name ) : '' )
); ?>"
>
<?php esc_html_e( 'Choose Image', 'one-user-avatar' ); ?>
</button>
</p>
<?php
elseif ( ! $wp_user_avatar->wpua_is_author_or_above() || $wpua_force_file_uploader ) :
// Upload button
?>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-upload-button' : 'wpua-upload-button-existing' ); ?>">
<input name="wpua-file" id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-file' : 'wpua-file-existing' ); ?>" type="file" />
<button type="submit" class="button" id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-upload' : 'wpua-upload-existing' ); ?>" name="submit" value="<?php esc_html_e( 'Upload', 'one-user-avatar' ); ?>">
<?php esc_html_e( 'Upload', 'one-user-avatar' ); ?>
</button>
</p>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-upload-messages' : 'wpua-upload-messages-existing' ); ?>">
<span id="<?php echo esc_attr( ( $user == 'add-new-user') ? 'wpua-max-upload' : 'wpua-max-upload-existing' ); ?>" class="description">
<?php
printf(
/* translators: file size in KB */
__( 'Maximum upload file size: %s.', 'one-user-avatar' ),
esc_html( $wpua_upload_size_limit_with_units . 'KB' )
);
?>
</span>
<span id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-allowed-files' : 'wpua-allowed-files-existing' ); ?>" class="description">
<?php
printf(
/* translators: allowed file extensions */
__( 'Allowed Files: %s', 'one-user-avatar' ),
'<code>jpg jpeg png gif</code>'
);
?>
</span>
</p>
<?php
endif;
?>
<div id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-images' : 'wpua-images-existing' ); ?>" class="<?php echo esc_attr( $hide_images ); ?>">
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-preview' : 'wpua-preview-existing' ); ?>">
<img src="<?php echo esc_url( $avatar_medium ); ?>" alt="<?php echo esc_attr( __( 'Original Size', 'one-user-avatar' ) ); ?>" />
<span class="description"><?php esc_html_e( 'Original Size', 'one-user-avatar' ); ?></span>
</p>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-thumbnail' : 'wpua-thumbnail-existing' ); ?>">
<img src="<?php echo esc_url( $avatar_thumbnail ); ?>" alt="<?php echo esc_attr( __( 'Thumbnail', 'one-user-avatar' ) ); ?>"/>
<span class="description"><?php esc_html_e( 'Thumbnail', 'one-user-avatar' ); ?></span>
</p>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-remove-button' : 'wpua-remove-button-existing' ); ?>" class="<?php echo esc_attr( $hide_remove ); ?>">
<button type="button" class="button" id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-remove' : 'wpua-remove-existing' ); ?>" name="wpua-remove"><?php esc_html_e( 'Remove Image', 'one-user-avatar' ); ?></button>
</p>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-undo-button' : 'wpua-undo-button-existing' ); ?>">
<button type="button" class="button" id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-undo' : 'wpua-undo-existing' ); ?>" name="wpua-undo"><?php esc_html_e( 'Undo', 'one-user-avatar' ); ?></button>
</p>
</div>
<?php
}
/**
* Add to edit user profile
*
* @param object $user
*
* @since 1.4
* @uses int $blog_id
* @uses object $current_user
* @uses bool $show_avatars
* @uses object $wpdb
* @uses object $wp_user_avatar
* @uses bool $wpua_edit_avatar
* @uses object $wpua_functions
* @uses string $wpua_upload_size_limit_with_units
* @uses add_query_arg()
* @uses admin_url()
* @uses do_action()
* @uses get_blog_prefix()
* @uses get_user_meta()
* @uses get_wp_user_avatar_src()
* @uses has_wp_user_avatar()
* @uses is_admin()
* @uses wpua_author()
* @uses wpua_get_avatar_original()
* @uses wpua_is_author_or_above()
*/
public static function wpua_action_show_user_profile( $user ) {
$is_admin = is_admin() ? '_admin' : '';
do_action( 'wpua_before_avatar' . $is_admin );
self::wpua_core_show_user_profile( $user );
do_action( 'wpua_after_avatar' . $is_admin );
}
public function wpua_maybe_show_user_profile( $user ) {
if ( is_admin() ) {
return;
}
$this->wpua_action_show_user_profile( $user );
}
// setting defaults for the filter callback fixes an error like https://wordpress.org/support/topic/error-missing-argument-2-for-wp_user_avatarclosure
// see
public function wpua_description_show_user_profile( $description = '', $profileuser = null ) {
ob_start();
echo wp_specialchars_decode( wp_kses(
'<style>.user-profile-picture > td > .avatar { display: none; }</style>',
array(
'style' => array(),
)
) );
self::wpua_core_show_user_profile( $profileuser );
return ob_get_clean();
}
/**
* Add upload error messages
* @since 1.7.1
* @param array $errors
* @param bool $update
* @param object $user
* @uses int $wpua_upload_size_limit
* @uses add()
* @uses wp_upload_dir()
*/
public static function wpua_upload_errors( $errors, $update, $user ) {
global $wpua_upload_size_limit;
if ( $update && ! empty( $_FILES['wpua-file'] ) ) {
$file = $_FILES['wpua-file'];
$size = isset( $file['size'] ) ? absint( $file['size'] ) : 0;
$type = isset( $file['type'] ) ? sanitize_mime_type( $file['type'] ) : '';
$upload_dir = wp_upload_dir();
// Allow only JPG, GIF, PNG
if ( ! empty( $type ) && ! preg_match( '/(jpe?g|gif|png)$/i', $type ) ) {
$errors->add( 'wpua_file_type', __( 'This file is not an image. Please try another.', 'one-user-avatar' ) );
}
// Upload size limit
if ( ! empty( $size ) && $size > $wpua_upload_size_limit ) {
$errors->add( 'wpua_file_size', __( 'Memory exceeded. Please try another smaller file.', 'one-user-avatar' ) );
}
// Check if directory is writeable
if ( ! is_writeable( $upload_dir['path'] ) ) {
$errors->add( 'wpua_file_directory', sprintf(
/* translators: directory path */
__( 'Unable to create directory %s. Is its parent directory writable by the server?', 'one-user-avatar' ), $upload_dir['path']
) );
}
}
}
/**
* Set upload size limit
* @since 1.5
* @param object $file
* @uses int $wpua_upload_size_limit
* @uses add_action()
* @return object $file
*/
public function wpua_handle_upload_prefilter( $file ) {
global $wpua_upload_size_limit;
$size = absint( $file['size'] );
if ( ! empty( $size ) && $size > $wpua_upload_size_limit ) {
/**
* Error handling that only appears on front pages
* @since 1.7
*/
function wpua_file_size_error( $errors, $update, $user ) {
$errors->add( 'wpua_file_size', __( 'Memory exceeded. Please try another smaller file.', 'one-user-avatar' ) );
}
add_action( 'user_profile_update_errors', 'wpua_file_size_error', 10, 3 );
return;
}
return $file;
}
/**
* Update user meta
* @since 1.4
* @param int $user_id
* @uses int $blog_id
* @uses object $post
* @uses object $wpdb
* @uses object $wp_user_avatar
* @uses bool $wpua_resize_crop
* @uses int $wpua_resize_h
* @uses bool $wpua_resize_upload
* @uses int $wpua_resize_w
* @uses add_post_meta()
* @uses delete_metadata()
* @uses get_blog_prefix()
* @uses is_wp_error()
* @uses update_post_meta()
* @uses update_user_meta()
* @uses wp_delete_attachment()
* @uses wp_generate_attachment_metadata()
* @uses wp_get_image_editor()
* @uses wp_handle_upload()
* @uses wp_insert_attachment()
* @uses WP_Query()
* @uses wp_read_image_metadata()
* @uses wp_reset_query()
* @uses wp_update_attachment_metadata()
* @uses wp_upload_dir()
* @uses wpua_is_author_or_above()
* @uses object $wpua_admin
* @uses wpua_has_gravatar()
*/
public static function wpua_action_process_option_update( $user_id ) {
global $blog_id,
$post,
$wpdb,
$wp_user_avatar,
$wpua_force_file_uploader,
$wpua_resize_crop,
$wpua_resize_h,
$wpua_resize_upload,
$wpua_resize_w,
$wpua_admin;
// Check if user has publish_posts capability
if ( $wp_user_avatar->wpua_is_author_or_above() && ! $wpua_force_file_uploader ) {
$wpua_id = isset( $_POST['wp-user-avatar'] ) ? absint( $_POST['wp-user-avatar'] ) : 0;
// Remove old attachment postmeta
delete_metadata( 'post', null, '_wp_attachment_wp_user_avatar', $user_id, true );
// Create new attachment postmeta
add_post_meta( $wpua_id, '_wp_attachment_wp_user_avatar', $user_id );
// Update usermeta
update_user_meta( $user_id, $wpdb->get_blog_prefix( $blog_id ) . 'user_avatar', $wpua_id );
} else {
// Remove attachment info if avatar is blank
if ( isset( $_POST['wp-user-avatar'] ) && empty( $_POST['wp-user-avatar'] ) ) {
// Delete other uploads by user
$q = array(
'author' => $user_id,
'post_type' => 'attachment',
'post_status' => 'inherit',
'posts_per_page' => '-1',
'meta_query' => array(
array(
'key' => '_wp_attachment_wp_user_avatar',
'value' => "",
'compare' => '!='
),
),
);
$avatars_wp_query = new WP_Query( $q );
while( $avatars_wp_query->have_posts() ) {
$avatars_wp_query->the_post();
wp_delete_attachment( $post->ID );
}
wp_reset_query();
// Remove attachment postmeta
delete_metadata( 'post', null, '_wp_attachment_wp_user_avatar', $user_id, true );
// Remove usermeta
update_user_meta( $user_id, $wpdb->get_blog_prefix( $blog_id ) . 'user_avatar', '' );
}
// Create attachment from upload
if ( isset( $_POST['submit'] ) && $_POST['submit'] && ! empty( $_FILES['wpua-file'] ) ) {
$file = $_FILES['wpua-file'];
$name = isset( $file['name'] ) ? sanitize_file_name( $file['name'] ) : '';
$type = isset( $file['type'] ) ? sanitize_mime_type( $file['type'] ) : '';
$file = wp_handle_upload( $file, array(
'test_form' => false,
) );
if ( isset( $file['url'] ) ) {
if ( ! empty( $type ) && preg_match( '/(jpe?g|gif|png)$/i' , $type ) ) {
// Resize uploaded image
if ( 1 == (bool) $wpua_resize_upload ) {
// Original image
$uploaded_image = wp_get_image_editor( $file['file'] );
// Check for errors
if ( ! is_wp_error( $uploaded_image ) ) {
// Resize image
$uploaded_image->resize( $wpua_resize_w, $wpua_resize_h, $wpua_resize_crop );
// Save image
$uploaded_image->save( $file['file'] );
}
}
// Break out file info
$name_parts = pathinfo( $name );
$name = trim( substr( $name, 0, -( 1 + strlen( $name_parts['extension'] ) ) ) );
$url = $file['url'];
$file = $file['file'];
$title = $name;
// Use image exif/iptc data for title if possible
if ( $image_meta = @wp_read_image_metadata( $file ) ) {
if ( trim( $image_meta['title'] ) && ! is_numeric( sanitize_title( $image_meta['title'] ) ) ) {
$title = $image_meta['title'];
}
}
// Construct the attachment array
$attachment = array(
'guid' => $url,
'post_mime_type' => $type,
'post_title' => $title,
'post_content' => '',
);
// This should never be set as it would then overwrite an existing attachment
if ( isset( $attachment['ID'] ) ) {
unset( $attachment['ID'] );
}
// Save the attachment metadata
$attachment_id = wp_insert_attachment( $attachment, $file );
if ( ! is_wp_error( $attachment_id ) ) {
// Delete other uploads by user
$q = array(
'author' => $user_id,
'post_type' => 'attachment',
'post_status' => 'inherit',
'posts_per_page' => '-1',
'meta_query' => array(
array(
'key' => '_wp_attachment_wp_user_avatar',
'value' => '',
'compare' => '!=',
),
),
);
$avatars_wp_query = new WP_Query( $q );
while ( $avatars_wp_query->have_posts() ){
$avatars_wp_query->the_post();
wp_delete_attachment($post->ID);
}
wp_reset_query();
wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );
// Remove old attachment postmeta
delete_metadata( 'post', null, '_wp_attachment_wp_user_avatar', $user_id, true );
// Create new attachment postmeta
update_post_meta( $attachment_id, '_wp_attachment_wp_user_avatar', $user_id );
// Update usermeta
update_user_meta( $user_id, $wpdb->get_blog_prefix( $blog_id ) . 'user_avatar', $attachment_id );
}
}
}
}
}
}
/**
* Check attachment is owned by user
* @since 1.4
* @param int $attachment_id
* @param int $user_id
* @param bool $wpua_author
* @uses get_post()
* @return bool
*/
private function wpua_author( $attachment_id, $user_id, $wpua_author = 0 ) {
$attachment = get_post( $attachment_id );
if ( ! empty( $attachment ) && $attachment->post_author == $user_id ) {
$wpua_author = true;
}
return (bool) $wpua_author;
}
/**
* Check if current user has at least Author privileges
* @since 1.8.5
* @uses current_user_can()
* @uses apply_filters()
* @return bool
*/
public function wpua_is_author_or_above() {
$is_author_or_above = (
current_user_can( 'edit_published_posts' ) &&
current_user_can( 'upload_files' ) &&
current_user_can( 'publish_posts') &&
current_user_can( 'delete_published_posts')
) ? true : false;
/**
* Filter Author privilege check
* @since 1.9.2
* @param bool $is_author_or_above
*/
return (bool) apply_filters( 'wpua_is_author_or_above', $is_author_or_above );
}
}
/**
* Initialize WP_User_Avatar
* @since 1.8
*/
function wpua_init() {
global $wp_user_avatar;
if ( ! isset( $wp_user_avatar ) ) {
$wp_user_avatar = new WP_User_Avatar();
}
return $wp_user_avatar;
}
add_action( 'init', 'wpua_init' );
我想放在短代码中的一段代码是下面这个，基本上它显示了缩略图。我试图用这个在 functions.php 中构建一个短代码，但我没有成功。
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-thumbnail' : 'wpua-thumbnail-existing' ); ?>"><img src="<?php echo esc_url( $avatar_thumbnail ); ?>" alt="<?php echo esc_attr( __( 'Thumbnail', 'one-user-avatar' ) ); ?>"/>
<span class="description"><?php esc_html_e( 'Thumbnail', 'one-user-avatar' ); ?></span>
</p>
这是我所做的：
// Shortcode to output custom PHP
function demo_shortcode() {
?><img src="<?php echo $avatar_thumbnail; ?>" alt="" /><?php
global
$current_user,
$show_avatars,
$wpdb,
$wp_user_avatar,
$wpua_functions;
// If avatars are enabled, get original avatar image or show blank
$avatar_medium_src = 1 == (bool) $show_avatars ? $wpua_functions->wpua_get_avatar_original( @$user->user_email, 'medium' ) : includes_url() . 'images/blank.gif';
// Check if user has wp_user_avatar, if not show image from above
$avatar_thumbnail = $has_wp_user_avatar ? get_wp_user_avatar_src( $user->ID, 96 ) : $avatar_medium_src;
return $avatar_medium_src;
}
add_shortcode('demo', 'demo_shortcode');
这是您要查找的通用函数。
我不能保证它会起作用，因为我没有可用的插件。
您引用的原始函数假设正在向它传递一个 $user 对象，但我在您的实现中没有看到这一点，所以我将假设当前登录的用户, 如果它们存在的话。
我提取了所有我能找到的全局变量。还有一堆来自插件的函数，我不能保证会是 loaded/available，但你至少应该得到一个错误。
显然，根据需要重命名函数。
function stuff() {
// The first is a WordPress global, the other two are from the plugin, apparently
global $current_user, $show_avatars, $wpua_functions;
// Blindly assume we're talking about the current user
$user = $current_user;
// Call one of the plugin's functions
$has_wp_user_avatar = has_wp_user_avatar(@$user->ID);
// Why "1==(boo)"? Not sure who wrote that, but I'm leaving it in.
$avatar_medium_src = 1 == (bool)$show_avatars ? $wpua_functions->wpua_get_avatar_original($user->user_email, 'medium') : includes_url().'images/blank.gif';
$avatar_thumbnail = $has_wp_user_avatar ? get_wp_user_avatar_src($user->ID, 96) : $avatar_medium_src;
?>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-thumbnail' : 'wpua-thumbnail-existing' ); ?>"><img src="<?php echo esc_url( $avatar_thumbnail ); ?>" alt="<?php echo esc_attr( __( 'Thumbnail', 'one-user-avatar' ) ); ?>"/>
<span class="description"><?php esc_html_e( 'Thumbnail', 'one-user-avatar' ); ?></span>
</p>
<?php
}
我有一个 wordpress 插件，可以让我上传用户头像。我正在尝试获取一段显示缩略图的代码并将其放入短代码中，以便我可以将缩略图放置在网站的任何位置。
我对 php 比较陌生，我知道如何为 wordpress 启动短代码，但我不知道如何构建短代码以托管 php。有好心人给我提建议吗？
以下代码php为插件文件原文：
<?php
/**
* Defines all profile and upload settings.
*
* @package One User Avatar
* @author Bangbay Siboliban
* @author Flippercode
* @author ProfilePress
* @author One Designs
* @copyright 2013-2014 Bangbay Siboliban
* @copyright 2014-2020 Flippercode
* @copyright 2020-2021 ProfilePress
* @copyright 2021 One Designs
* @version 2.3.9
*/
class WP_User_Avatar {
/**
* Constructor
* @since 1.8
* @uses string $pagenow
* @uses bool $show_avatars
* @uses object $wpua_admin
* @uses bool $wpua_allow_upload
* @uses add_action()
* @uses add_filterI]()
* @uses is_admin()
* @uses is_user_logged_in()
* @uses wpua_is_author_or_above()
* @uses wpua_is_menu_page()
*/
public function __construct() {
global $pagenow, $show_avatars, $wpua_admin, $wpua_allow_upload;
// Add WPUA to profile for users with permission
if ( $this->wpua_is_author_or_above() || ( 1 == (bool) $wpua_allow_upload && is_user_logged_in() ) ) {
// Profile functions and scripts
add_action( 'show_user_profile', array( $this, 'wpua_maybe_show_user_profile' ) );
add_action( 'edit_user_profile', array( $this, 'wpua_maybe_show_user_profile' ) );
add_action( 'personal_options_update', array( $this, 'wpua_action_process_option_update' ) );
add_action( 'edit_user_profile_update', array( $this, 'wpua_action_process_option_update' ) );
add_action( 'user_new_form', array( $this, 'wpua_action_show_user_profile' ) );
add_action( 'user_register', array( $this, 'wpua_action_process_option_update' ) );
add_filter( 'user_profile_picture_description', array( $this, 'wpua_description_show_user_profile' ), PHP_INT_MAX, 2 );
// Admin scripts
$pages = array( 'profile.php', 'options-discussion.php', 'user-edit.php', 'user-new.php', 'admin.php' );
if ( in_array( $pagenow, $pages ) || $wpua_admin->wpua_is_menu_page() ) {
add_action( 'admin_enqueue_scripts', array( $this, 'wpua_media_upload_scripts' ) );
}
// Front pages
if ( ! is_admin() ) {
add_action( 'show_user_profile', array( 'wp_user_avatar', 'wpua_media_upload_scripts' ) );
add_action( 'edit_user_profile', array( 'wp_user_avatar', 'wpua_media_upload_scripts' ) );
}
if ( ! $this->wpua_is_author_or_above() ) {
// Upload errors
add_action( 'user_profile_update_errors', array( $this, 'wpua_upload_errors' ), 10, 3 );
// Prefilter upload size
add_filter( 'wp_handle_upload_prefilter', array( $this, 'wpua_handle_upload_prefilter' ) );
}
}
add_filter( 'media_view_settings', array( $this, 'wpua_media_view_settings' ), 10, 1 );
}
/**
* Avatars have no parent posts
*
* @param array $settings
*
* @return array
* @uses object $post
* @uses bool $wpua_is_profile
* @uses is_admin()
* array $settings
* @since 1.8.4
*/
public function wpua_media_view_settings( $settings ) {
global $post, $wpua_is_profile;
// Get post ID so not to interfere with media uploads
$post_id = is_object( $post ) ? $post->ID : 0;
// Don't use post ID on front pages if there's a WPUA uploader
$settings['post']['id'] = ( ! is_admin() && 1 == $wpua_is_profile ) ? 0 : $post_id;
return $settings;
}
/**
* Media Uploader
* @since 1.4
* @param object $user
* @uses object $current_user
* @uses string $mustache_admin
* @uses string $pagenow
* @uses object $post
* @uses bool $show_avatars
* @uses object $wp_user_avatar
* @uses object $wpua_admin
* @uses object $wpua_functions
* @uses bool $wpua_is_profile
* @uses int $wpua_upload_size_limit
* @uses get_user_by()
* @uses wp_enqueue_script()
* @uses wp_enqueue_media()
* @uses wp_enqueue_style()
* @uses wp_localize_script()
* @uses wp_max_upload_size()
* @uses wpua_get_avatar_original()
* @uses wpua_is_author_or_above()
* @uses wpua_is_menu_page()
*/
public static function wpua_media_upload_scripts( $user = '' ) {
global $current_user,
$mustache_admin,
$pagenow,
$plugin_page,
$post,
$show_avatars,
$wp_user_avatar,
$wpua_force_file_uploader,
$wpua_admin,
$wpua_functions,
$wpua_is_profile,
$wpua_upload_size_limit;
// This is a profile page
$wpua_is_profile = 1;
$user = ( $pagenow == 'user-edit.php' && isset( $_GET['user_id'] ) ) ? get_user_by( 'id', absint( $_GET['user_id'] ) ) : $current_user;
wp_enqueue_style( 'wp-user-avatar', WPUA_CSS_URL . 'wp-user-avatar.css', '', WPUA_VERSION );
wp_enqueue_script( 'jquery' );
if ( ( $wp_user_avatar->wpua_is_author_or_above() && ! $wpua_force_file_uploader ) || 'options-discussion.php' == $pagenow ) {
wp_enqueue_script( 'admin-bar' );
wp_enqueue_media( array( 'post' => $post ) );
wp_enqueue_script( 'wp-user-avatar', WPUA_JS_URL . 'wp-user-avatar.js', array( 'jquery', 'media-editor' ), WPUA_VERSION, true );
} else {
wp_enqueue_script( 'wp-user-avatar', WPUA_JS_URL . 'wp-user-avatar-user.js', array( 'jquery' ), WPUA_VERSION, true );
}
// Admin scripts
if ( 'options-discussion.php' == $pagenow || $wpua_admin->wpua_is_menu_page() ) {
wp_localize_script( 'wp-user-avatar', 'wpua_custom', array(
'avatar_thumb' => $mustache_admin,
) );
}
if (
'options-discussion.php' == $pagenow
||
$wpua_admin->wpua_is_menu_page()
||
(
'admin.php' == $pagenow
&&
isset( $plugin_page )
&&
'wp-user-avatar-library' == $plugin_page
)
) {
// Settings control
wp_enqueue_script( 'wp-user-avatar-admin', WPUA_JS_URL . 'wp-user-avatar-admin.js', array( 'wp-user-avatar' ), WPUA_VERSION, true );
wp_localize_script( 'wp-user-avatar-admin', 'wpua_admin', array(
'upload_size_limit' => $wpua_upload_size_limit,
'max_upload_size' => wp_max_upload_size(),
) );
} else {
// Original user avatar
$avatar_medium_src = 1 == (bool) $show_avatars ? $wpua_functions->wpua_get_avatar_original( $user->user_email, 'medium' ) : includes_url() . 'images/blank.gif';
wp_localize_script( 'wp-user-avatar', 'wpua_custom', array(
'avatar_thumb' => $avatar_medium_src,
) );
}
}
public static function wpua_core_show_user_profile( $user ) {
global $blog_id,
$current_user,
$show_avatars,
$wpdb,
$wp_user_avatar,
$wpua_force_file_uploader,
$wpua_edit_avatar,
$wpua_functions,
$wpua_upload_size_limit_with_units;
$has_wp_user_avatar = has_wp_user_avatar( @$user->ID );
// Get WPUA attachment ID
$wpua = get_user_meta( @$user->ID, $wpdb->get_blog_prefix( $blog_id ) . 'user_avatar', true );
// Show remove button if WPUA is set
$hide_remove = ! $has_wp_user_avatar ? 'wpua-hide' : '';
// Hide image tags if show avatars is off
$hide_images = ! $has_wp_user_avatar && 0 == (bool) $show_avatars ? 'wpua-no-avatars' : '';
// If avatars are enabled, get original avatar image or show blank
$avatar_medium_src = 1 == (bool) $show_avatars ? $wpua_functions->wpua_get_avatar_original( @$user->user_email, 'medium' ) : includes_url() . 'images/blank.gif';
// Check if user has wp_user_avatar, if not show image from above
$avatar_medium = $has_wp_user_avatar ? get_wp_user_avatar_src( $user->ID, 'medium' ) : $avatar_medium_src;
// Check if user has wp_user_avatar, if not show image from above
$avatar_thumbnail = $has_wp_user_avatar ? get_wp_user_avatar_src( $user->ID, 96 ) : $avatar_medium_src;
$edit_attachment_link = esc_url( add_query_arg( array(
'post' => $wpua,
'action' => 'edit',
), admin_url( 'post.php' ) ) );
?>
<input type="hidden" name="wp-user-avatar" id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wp-user-avatar' : 'wp-user-avatar-existing' ) ?>" value="<?php echo esc_attr( $wpua ); ?>" />
<?php
if ( $wp_user_avatar->wpua_is_author_or_above() && ! $wpua_force_file_uploader ) :
// Button to launch Media Uploader
?>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-add-button' : 'wpua-add-button-existing' ); ?>">
<button
type="button"
class="button"
id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-add' : 'wpua-add-existing' ); ?>"
name="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-add' : 'wpua-add-existing' ); ?>"
data-title="<?php printf(
/* translators: user display name */
__( 'Choose Image: %s', 'one-user-avatar' ),
( ! empty( $user->display_name ) ? esc_attr( $user->display_name ) : '' )
); ?>"
>
<?php esc_html_e( 'Choose Image', 'one-user-avatar' ); ?>
</button>
</p>
<?php
elseif ( ! $wp_user_avatar->wpua_is_author_or_above() || $wpua_force_file_uploader ) :
// Upload button
?>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-upload-button' : 'wpua-upload-button-existing' ); ?>">
<input name="wpua-file" id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-file' : 'wpua-file-existing' ); ?>" type="file" />
<button type="submit" class="button" id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-upload' : 'wpua-upload-existing' ); ?>" name="submit" value="<?php esc_html_e( 'Upload', 'one-user-avatar' ); ?>">
<?php esc_html_e( 'Upload', 'one-user-avatar' ); ?>
</button>
</p>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-upload-messages' : 'wpua-upload-messages-existing' ); ?>">
<span id="<?php echo esc_attr( ( $user == 'add-new-user') ? 'wpua-max-upload' : 'wpua-max-upload-existing' ); ?>" class="description">
<?php
printf(
/* translators: file size in KB */
__( 'Maximum upload file size: %s.', 'one-user-avatar' ),
esc_html( $wpua_upload_size_limit_with_units . 'KB' )
);
?>
</span>
<span id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-allowed-files' : 'wpua-allowed-files-existing' ); ?>" class="description">
<?php
printf(
/* translators: allowed file extensions */
__( 'Allowed Files: %s', 'one-user-avatar' ),
'<code>jpg jpeg png gif</code>'
);
?>
</span>
</p>
<?php
endif;
?>
<div id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-images' : 'wpua-images-existing' ); ?>" class="<?php echo esc_attr( $hide_images ); ?>">
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-preview' : 'wpua-preview-existing' ); ?>">
<img src="<?php echo esc_url( $avatar_medium ); ?>" alt="<?php echo esc_attr( __( 'Original Size', 'one-user-avatar' ) ); ?>" />
<span class="description"><?php esc_html_e( 'Original Size', 'one-user-avatar' ); ?></span>
</p>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-thumbnail' : 'wpua-thumbnail-existing' ); ?>">
<img src="<?php echo esc_url( $avatar_thumbnail ); ?>" alt="<?php echo esc_attr( __( 'Thumbnail', 'one-user-avatar' ) ); ?>"/>
<span class="description"><?php esc_html_e( 'Thumbnail', 'one-user-avatar' ); ?></span>
</p>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-remove-button' : 'wpua-remove-button-existing' ); ?>" class="<?php echo esc_attr( $hide_remove ); ?>">
<button type="button" class="button" id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-remove' : 'wpua-remove-existing' ); ?>" name="wpua-remove"><?php esc_html_e( 'Remove Image', 'one-user-avatar' ); ?></button>
</p>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-undo-button' : 'wpua-undo-button-existing' ); ?>">
<button type="button" class="button" id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-undo' : 'wpua-undo-existing' ); ?>" name="wpua-undo"><?php esc_html_e( 'Undo', 'one-user-avatar' ); ?></button>
</p>
</div>
<?php
}
/**
* Add to edit user profile
*
* @param object $user
*
* @since 1.4
* @uses int $blog_id
* @uses object $current_user
* @uses bool $show_avatars
* @uses object $wpdb
* @uses object $wp_user_avatar
* @uses bool $wpua_edit_avatar
* @uses object $wpua_functions
* @uses string $wpua_upload_size_limit_with_units
* @uses add_query_arg()
* @uses admin_url()
* @uses do_action()
* @uses get_blog_prefix()
* @uses get_user_meta()
* @uses get_wp_user_avatar_src()
* @uses has_wp_user_avatar()
* @uses is_admin()
* @uses wpua_author()
* @uses wpua_get_avatar_original()
* @uses wpua_is_author_or_above()
*/
public static function wpua_action_show_user_profile( $user ) {
$is_admin = is_admin() ? '_admin' : '';
do_action( 'wpua_before_avatar' . $is_admin );
self::wpua_core_show_user_profile( $user );
do_action( 'wpua_after_avatar' . $is_admin );
}
public function wpua_maybe_show_user_profile( $user ) {
if ( is_admin() ) {
return;
}
$this->wpua_action_show_user_profile( $user );
}
// setting defaults for the filter callback fixes an error like https://wordpress.org/support/topic/error-missing-argument-2-for-wp_user_avatarclosure
// see
public function wpua_description_show_user_profile( $description = '', $profileuser = null ) {
ob_start();
echo wp_specialchars_decode( wp_kses(
'<style>.user-profile-picture > td > .avatar { display: none; }</style>',
array(
'style' => array(),
)
) );
self::wpua_core_show_user_profile( $profileuser );
return ob_get_clean();
}
/**
* Add upload error messages
* @since 1.7.1
* @param array $errors
* @param bool $update
* @param object $user
* @uses int $wpua_upload_size_limit
* @uses add()
* @uses wp_upload_dir()
*/
public static function wpua_upload_errors( $errors, $update, $user ) {
global $wpua_upload_size_limit;
if ( $update && ! empty( $_FILES['wpua-file'] ) ) {
$file = $_FILES['wpua-file'];
$size = isset( $file['size'] ) ? absint( $file['size'] ) : 0;
$type = isset( $file['type'] ) ? sanitize_mime_type( $file['type'] ) : '';
$upload_dir = wp_upload_dir();
// Allow only JPG, GIF, PNG
if ( ! empty( $type ) && ! preg_match( '/(jpe?g|gif|png)$/i', $type ) ) {
$errors->add( 'wpua_file_type', __( 'This file is not an image. Please try another.', 'one-user-avatar' ) );
}
// Upload size limit
if ( ! empty( $size ) && $size > $wpua_upload_size_limit ) {
$errors->add( 'wpua_file_size', __( 'Memory exceeded. Please try another smaller file.', 'one-user-avatar' ) );
}
// Check if directory is writeable
if ( ! is_writeable( $upload_dir['path'] ) ) {
$errors->add( 'wpua_file_directory', sprintf(
/* translators: directory path */
__( 'Unable to create directory %s. Is its parent directory writable by the server?', 'one-user-avatar' ), $upload_dir['path']
) );
}
}
}
/**
* Set upload size limit
* @since 1.5
* @param object $file
* @uses int $wpua_upload_size_limit
* @uses add_action()
* @return object $file
*/
public function wpua_handle_upload_prefilter( $file ) {
global $wpua_upload_size_limit;
$size = absint( $file['size'] );
if ( ! empty( $size ) && $size > $wpua_upload_size_limit ) {
/**
* Error handling that only appears on front pages
* @since 1.7
*/
function wpua_file_size_error( $errors, $update, $user ) {
$errors->add( 'wpua_file_size', __( 'Memory exceeded. Please try another smaller file.', 'one-user-avatar' ) );
}
add_action( 'user_profile_update_errors', 'wpua_file_size_error', 10, 3 );
return;
}
return $file;
}
/**
* Update user meta
* @since 1.4
* @param int $user_id
* @uses int $blog_id
* @uses object $post
* @uses object $wpdb
* @uses object $wp_user_avatar
* @uses bool $wpua_resize_crop
* @uses int $wpua_resize_h
* @uses bool $wpua_resize_upload
* @uses int $wpua_resize_w
* @uses add_post_meta()
* @uses delete_metadata()
* @uses get_blog_prefix()
* @uses is_wp_error()
* @uses update_post_meta()
* @uses update_user_meta()
* @uses wp_delete_attachment()
* @uses wp_generate_attachment_metadata()
* @uses wp_get_image_editor()
* @uses wp_handle_upload()
* @uses wp_insert_attachment()
* @uses WP_Query()
* @uses wp_read_image_metadata()
* @uses wp_reset_query()
* @uses wp_update_attachment_metadata()
* @uses wp_upload_dir()
* @uses wpua_is_author_or_above()
* @uses object $wpua_admin
* @uses wpua_has_gravatar()
*/
public static function wpua_action_process_option_update( $user_id ) {
global $blog_id,
$post,
$wpdb,
$wp_user_avatar,
$wpua_force_file_uploader,
$wpua_resize_crop,
$wpua_resize_h,
$wpua_resize_upload,
$wpua_resize_w,
$wpua_admin;
// Check if user has publish_posts capability
if ( $wp_user_avatar->wpua_is_author_or_above() && ! $wpua_force_file_uploader ) {
$wpua_id = isset( $_POST['wp-user-avatar'] ) ? absint( $_POST['wp-user-avatar'] ) : 0;
// Remove old attachment postmeta
delete_metadata( 'post', null, '_wp_attachment_wp_user_avatar', $user_id, true );
// Create new attachment postmeta
add_post_meta( $wpua_id, '_wp_attachment_wp_user_avatar', $user_id );
// Update usermeta
update_user_meta( $user_id, $wpdb->get_blog_prefix( $blog_id ) . 'user_avatar', $wpua_id );
} else {
// Remove attachment info if avatar is blank
if ( isset( $_POST['wp-user-avatar'] ) && empty( $_POST['wp-user-avatar'] ) ) {
// Delete other uploads by user
$q = array(
'author' => $user_id,
'post_type' => 'attachment',
'post_status' => 'inherit',
'posts_per_page' => '-1',
'meta_query' => array(
array(
'key' => '_wp_attachment_wp_user_avatar',
'value' => "",
'compare' => '!='
),
),
);
$avatars_wp_query = new WP_Query( $q );
while( $avatars_wp_query->have_posts() ) {
$avatars_wp_query->the_post();
wp_delete_attachment( $post->ID );
}
wp_reset_query();
// Remove attachment postmeta
delete_metadata( 'post', null, '_wp_attachment_wp_user_avatar', $user_id, true );
// Remove usermeta
update_user_meta( $user_id, $wpdb->get_blog_prefix( $blog_id ) . 'user_avatar', '' );
}
// Create attachment from upload
if ( isset( $_POST['submit'] ) && $_POST['submit'] && ! empty( $_FILES['wpua-file'] ) ) {
$file = $_FILES['wpua-file'];
$name = isset( $file['name'] ) ? sanitize_file_name( $file['name'] ) : '';
$type = isset( $file['type'] ) ? sanitize_mime_type( $file['type'] ) : '';
$file = wp_handle_upload( $file, array(
'test_form' => false,
) );
if ( isset( $file['url'] ) ) {
if ( ! empty( $type ) && preg_match( '/(jpe?g|gif|png)$/i' , $type ) ) {
// Resize uploaded image
if ( 1 == (bool) $wpua_resize_upload ) {
// Original image
$uploaded_image = wp_get_image_editor( $file['file'] );
// Check for errors
if ( ! is_wp_error( $uploaded_image ) ) {
// Resize image
$uploaded_image->resize( $wpua_resize_w, $wpua_resize_h, $wpua_resize_crop );
// Save image
$uploaded_image->save( $file['file'] );
}
}
// Break out file info
$name_parts = pathinfo( $name );
$name = trim( substr( $name, 0, -( 1 + strlen( $name_parts['extension'] ) ) ) );
$url = $file['url'];
$file = $file['file'];
$title = $name;
// Use image exif/iptc data for title if possible
if ( $image_meta = @wp_read_image_metadata( $file ) ) {
if ( trim( $image_meta['title'] ) && ! is_numeric( sanitize_title( $image_meta['title'] ) ) ) {
$title = $image_meta['title'];
}
}
// Construct the attachment array
$attachment = array(
'guid' => $url,
'post_mime_type' => $type,
'post_title' => $title,
'post_content' => '',
);
// This should never be set as it would then overwrite an existing attachment
if ( isset( $attachment['ID'] ) ) {
unset( $attachment['ID'] );
}
// Save the attachment metadata
$attachment_id = wp_insert_attachment( $attachment, $file );
if ( ! is_wp_error( $attachment_id ) ) {
// Delete other uploads by user
$q = array(
'author' => $user_id,
'post_type' => 'attachment',
'post_status' => 'inherit',
'posts_per_page' => '-1',
'meta_query' => array(
array(
'key' => '_wp_attachment_wp_user_avatar',
'value' => '',
'compare' => '!=',
),
),
);
$avatars_wp_query = new WP_Query( $q );
while ( $avatars_wp_query->have_posts() ){
$avatars_wp_query->the_post();
wp_delete_attachment($post->ID);
}
wp_reset_query();
wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );
// Remove old attachment postmeta
delete_metadata( 'post', null, '_wp_attachment_wp_user_avatar', $user_id, true );
// Create new attachment postmeta
update_post_meta( $attachment_id, '_wp_attachment_wp_user_avatar', $user_id );
// Update usermeta
update_user_meta( $user_id, $wpdb->get_blog_prefix( $blog_id ) . 'user_avatar', $attachment_id );
}
}
}
}
}
}
/**
* Check attachment is owned by user
* @since 1.4
* @param int $attachment_id
* @param int $user_id
* @param bool $wpua_author
* @uses get_post()
* @return bool
*/
private function wpua_author( $attachment_id, $user_id, $wpua_author = 0 ) {
$attachment = get_post( $attachment_id );
if ( ! empty( $attachment ) && $attachment->post_author == $user_id ) {
$wpua_author = true;
}
return (bool) $wpua_author;
}
/**
* Check if current user has at least Author privileges
* @since 1.8.5
* @uses current_user_can()
* @uses apply_filters()
* @return bool
*/
public function wpua_is_author_or_above() {
$is_author_or_above = (
current_user_can( 'edit_published_posts' ) &&
current_user_can( 'upload_files' ) &&
current_user_can( 'publish_posts') &&
current_user_can( 'delete_published_posts')
) ? true : false;
/**
* Filter Author privilege check
* @since 1.9.2
* @param bool $is_author_or_above
*/
return (bool) apply_filters( 'wpua_is_author_or_above', $is_author_or_above );
}
}
/**
* Initialize WP_User_Avatar
* @since 1.8
*/
function wpua_init() {
global $wp_user_avatar;
if ( ! isset( $wp_user_avatar ) ) {
$wp_user_avatar = new WP_User_Avatar();
}
return $wp_user_avatar;
}
add_action( 'init', 'wpua_init' );
我想放在短代码中的一段代码是下面这个，基本上它显示了缩略图。我试图用这个在 functions.php 中构建一个短代码，但我没有成功。
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-thumbnail' : 'wpua-thumbnail-existing' ); ?>"><img src="<?php echo esc_url( $avatar_thumbnail ); ?>" alt="<?php echo esc_attr( __( 'Thumbnail', 'one-user-avatar' ) ); ?>"/>
<span class="description"><?php esc_html_e( 'Thumbnail', 'one-user-avatar' ); ?></span>
</p>
这是我所做的：
// Shortcode to output custom PHP
function demo_shortcode() {
?><img src="<?php echo $avatar_thumbnail; ?>" alt="" /><?php
global
$current_user,
$show_avatars,
$wpdb,
$wp_user_avatar,
$wpua_functions;
// If avatars are enabled, get original avatar image or show blank
$avatar_medium_src = 1 == (bool) $show_avatars ? $wpua_functions->wpua_get_avatar_original( @$user->user_email, 'medium' ) : includes_url() . 'images/blank.gif';
// Check if user has wp_user_avatar, if not show image from above
$avatar_thumbnail = $has_wp_user_avatar ? get_wp_user_avatar_src( $user->ID, 96 ) : $avatar_medium_src;
return $avatar_medium_src;
}
add_shortcode('demo', 'demo_shortcode');
这是您要查找的通用函数。
我不能保证它会起作用，因为我没有可用的插件。
您引用的原始函数假设正在向它传递一个 $user 对象，但我在您的实现中没有看到这一点，所以我将假设当前登录的用户, 如果它们存在的话。
我提取了所有我能找到的全局变量。还有一堆来自插件的函数，我不能保证会是 loaded/available，但你至少应该得到一个错误。
显然，根据需要重命名函数。
function stuff() {
// The first is a WordPress global, the other two are from the plugin, apparently
global $current_user, $show_avatars, $wpua_functions;
// Blindly assume we're talking about the current user
$user = $current_user;
// Call one of the plugin's functions
$has_wp_user_avatar = has_wp_user_avatar(@$user->ID);
// Why "1==(boo)"? Not sure who wrote that, but I'm leaving it in.
$avatar_medium_src = 1 == (bool)$show_avatars ? $wpua_functions->wpua_get_avatar_original($user->user_email, 'medium') : includes_url().'images/blank.gif';
$avatar_thumbnail = $has_wp_user_avatar ? get_wp_user_avatar_src($user->ID, 96) : $avatar_medium_src;
?>
<p id="<?php echo esc_attr( ( 'add-new-user' == $user ) ? 'wpua-thumbnail' : 'wpua-thumbnail-existing' ); ?>"><img src="<?php echo esc_url( $avatar_thumbnail ); ?>" alt="<?php echo esc_attr( __( 'Thumbnail', 'one-user-avatar' ) ); ?>"/>
<span class="description"><?php esc_html_e( 'Thumbnail', 'one-user-avatar' ); ?></span>
</p>
<?php
}