添加图像 alt 属性字段

Question

我有这些代码：

$slider_gallery.= '<span class="chpcs_img"><a href="'.$post_link.'">'.$this->get_post_image($post->ID,$image_size).'</a></span>';

public  function get_post_image($post_image_id, $img_size) {

    if (has_post_thumbnail($post_image_id)):
        $img_arr = wp_get_attachment_image_src(get_post_thumbnail_id($post_image_id), $img_size); $first_img = $img_arr[0];
    endif;

    if (empty($first_img)) {
        if (empty($this->options['settings']['default_image_url'])) {
            $first_img = plugins_url('assets/images/default-image.jpg', __FILE__);
        }
        else {
            $first_img = $this->options['settings']['default_image_url'];
        }
    }
    $first_img = "<img src='".$first_img. "' />";
    return $first_img;
}

我正在尝试添加 alt 属性，但无法弄清楚。顺便说一下 /plugins/carousel-horizontal-posts-content-slider/chpcs.php

上的 wordpress 插件 https://wordpress.org/plugins/carousel-horizontal-posts-content-slider/

第 340 行和第 404-427 行

Answer 1

在您的函数中传递 $img_alt。

public  function get_post_image($post_image_id, $img_size, $img_alt) {

    if (has_post_thumbnail( $post_image_id ) ): 
     $img_arr = wp_get_attachment_image_src( get_post_thumbnail_id( $post_image_id ), $img_size ); $first_img = $img_arr[0];

    endif; 

    if(empty($first_img)) {

    if(empty($this->options['settings']['default_image_url'])) {

         $first_img = plugins_url('assets/images/default-image.jpg', __FILE__);

    } else {

        $first_img = $this->options['settings']['default_image_url'];

    }
}
  $first_img = "<img src='". $first_img. "' alt='". $img_alt. "' />";
  return $first_img;
}

然后您的呼叫线路将是

$slider_gallery.= '<span class="chpcs_img"><a href="'.$post_link.'">'.$this->get_post_image($post->ID,$image_size, "Alt text").'</a></span>';

添加图像 alt 属性字段

Adding image alt attribute field

php

wordpress

image

function

alt