遍历图像列表并添加到 zip 下载问题

Question

我有以下代码，基本上抓取用户“65”添加的所有 Wordpress 图片。然后我尝试压缩所有这些图片并下载。

我遇到的问题是它只压缩 foreach 中的最后一张图片。

我不知道哪里出了问题，正在寻求专家指导。

非常感谢。

# get all attachments (images) for user ID 65
$pictures = new WP_Query( array( 'author' => '65', 'post_type' => 'attachment', 'post_status' => 'inheret', 'posts_per_page' => -1 ) );

if ( $pictures->posts ) :
    foreach ( $pictures->posts as $picture ) :
         if (wp_get_attachment_image_url($picture->ID, 'full')) :
         
            $files = array(wp_get_attachment_image_url( $picture->ID, 'full' ));
            if ($files) :
                //echo $files;
                
                # create new zip opbject
                $zip = new ZipArchive();
                
                # create a temp file & open it
                $tmp_file = tempnam('.','');
                $zip->open($tmp_file, ZipArchive::CREATE);
                
                # loop through each file
                foreach($files as $file){
                
                    # download file
                    $download_file = file_get_contents($file);
                
                    #add it to the zip
                    $zip->addFromString(basename($file),$download_file);
                
                }
                
                $zip->close();
                ob_clean();
                # send the file to the browser as a download
                $datestamp = date("d-M-Y", time());
                header('Content-disposition: attachment; filename=Backup-65-'.$datestamp.'.zip');
                header('Content-type: application/zip');
                readfile($tmp_file);


            endif;
        endif;
    endforeach;
endif;

Answer 1

您将在每次迭代时创建一个新的 ZipArchive 实例。将除添加文件外的所有操作移到循环外。

# get all attachments (images) for user ID 65
$pictures = new WP_Query( array( 'author' => '65', 'post_type' => 'attachment', 'post_status' => 'inheret', 'posts_per_page' => -1 ) );

if ( $pictures->posts ) :

    # create new zip opbject
    $zip = new ZipArchive();
                
    # create a temp file & open it
    $tmp_file = tempnam('.','');
    $zip->open($tmp_file, ZipArchive::CREATE);

    foreach ( $pictures->posts as $picture ) :
    
            $file = wp_get_attachment_image_url($picture->ID, 'full');
            
            # download file
            $download_file = file_get_contents($file);
                
            #add it to the zip
            $zip->addFromString(basename($file),$download_file);
    endforeach;
    
    $zip->close();
    ob_clean();
    # send the file to the browser as a download
    $datestamp = date("d-M-Y", time());
    header('Content-disposition: attachment; filename=Backup-65-'.$datestamp.'.zip');
    header('Content-type: application/zip');
    readfile($tmp_file);

endif;

遍历图像列表并添加到 zip 下载问题

Looping through list of images and adding to zip download issue

php

wordpress

ziparchive