PHP wp_update_attachment_metadata函数代码示例

 /**
  * Upload
  * Ajax callback function
  *
  * @return string Error or (XML-)response
  */
 static function handle_upload()
 {
     check_admin_referer('rwmb-upload-images_' . $_REQUEST['field_id']);
     $post_id = 0;
     if (is_numeric($_REQUEST['post_id'])) {
         $post_id = (int) $_REQUEST['post_id'];
     }
     // You can use WP's wp_handle_upload() function:
     $file = $_FILES['async-upload'];
     $file_attr = wp_handle_upload($file, array('test_form' => true, 'action' => 'plupload_image_upload'));
     $attachment = array('guid' => $file_attr['url'], 'post_mime_type' => $file_attr['type'], 'post_title' => preg_replace('/\\.[^.]+$/', '', basename($file['name'])), 'post_content' => '', 'post_status' => 'inherit');
     // Adds file as attachment to WordPress
     $id = wp_insert_attachment($attachment, $file_attr['file'], $post_id);
     if (!is_wp_error($id)) {
         wp_update_attachment_metadata($id, wp_generate_attachment_metadata($id, $file_attr['file']));
         // Save file ID in meta field
         if (isset($_REQUEST['field_id'])) {
             add_post_meta($post_id, $_REQUEST['field_id'], $id, false);
         }
         $response = new WP_Ajax_Response();
         $response->add(array('what' => 'rwmb_image_response', 'data' => self::img_html($id)));
         $response->send();
     }
     exit;
 }

 /**
  * @param strin $file_url
  *
  * @return int
  */
 private function upload_file($file_url)
 {
     if (!filter_var($file_url, FILTER_VALIDATE_URL)) {
         return false;
     }
     $contents = @file_get_contents($file_url);
     if ($contents === false) {
         return false;
     }
     $upload = wp_upload_bits(basename($file_url), null, $contents);
     if (isset($upload['error']) && $upload['error']) {
         return false;
     }
     $type = '';
     if (!empty($upload['type'])) {
         $type = $upload['type'];
     } else {
         $mime = wp_check_filetype($upload['file']);
         if ($mime) {
             $type = $mime['type'];
         }
     }
     $attachment = array('post_title' => basename($upload['file']), 'post_content' => '', 'post_type' => 'attachment', 'post_mime_type' => $type, 'guid' => $upload['url']);
     $id = wp_insert_attachment($attachment, $upload['file']);
     wp_update_attachment_metadata($id, wp_generate_attachment_metadata($id, $upload['file']));
     return $id;
 }

 /**
  * Creates new image size.
  *
  * @uses get_attached_file()
  * @uses image_make_intermediate_size()
  * @uses wp_update_attachment_metadata()
  * @uses get_post_meta()
  * @uses update_post_meta()
  *
  * @param $attachment_id
  * @param $width
  * @param $height
  * @param $meta
  * @param $original_src
  *
  * @return array
  */
 function themify_make_image_size($attachment_id, $width, $height, $meta, $original_src)
 {
     setlocale(LC_CTYPE, get_locale() . '.UTF-8');
     $attached_file = get_attached_file($attachment_id);
     if (apply_filters('themify_image_script_use_large_size', true) && isset($meta['sizes']['large']['file'])) {
         $attached_file = str_replace($meta['file'], trailingslashit(dirname($meta['file'])) . $meta['sizes']['large']['file'], $attached_file);
     }
     $resized = image_make_intermediate_size($attached_file, $width, $height, true);
     if ($resized && !is_wp_error($resized)) {
         // Save the new size in meta data
         $key = sprintf('resized-%dx%d', $width, $height);
         $meta['sizes'][$key] = $resized;
         $src = str_replace(basename($original_src), $resized['file'], $original_src);
         wp_update_attachment_metadata($attachment_id, $meta);
         // Save size in backup sizes so it's deleted when original attachment is deleted.
         $backup_sizes = get_post_meta($attachment_id, '_wp_attachment_backup_sizes', true);
         if (!is_array($backup_sizes)) {
             $backup_sizes = array();
         }
         $backup_sizes[$key] = $resized;
         update_post_meta($attachment_id, '_wp_attachment_backup_sizes', $backup_sizes);
         // Return resized image url, width and height.
         return array('url' => esc_url($src), 'width' => $width, 'height' => $height);
     }
     // Return resized image url, width and height.
     return array('url' => $original_src, 'width' => $width, 'height' => $height);
 }

/**
 * media_sideload_image, but returns ID
 * @param  string  $image_url [description]
 * @param  boolean $post_id   [description]
 * @return [type]             [description]
 */
function custom_media_sideload_image($image_url = '', $post_id = false)
{
    require_once ABSPATH . 'wp-admin/includes/file.php';
    $tmp = download_url($image_url);
    // Set variables for storage
    // fix file filename for query strings
    preg_match('/[^\\?]+\\.(jpe?g|jpe|gif|png)\\b/i', $image_url, $matches);
    $file_array['name'] = basename($matches[0]);
    $file_array['tmp_name'] = $tmp;
    // If error storing temporarily, unlink
    if (is_wp_error($tmp)) {
        @unlink($file_array['tmp_name']);
        $file_array['tmp_name'] = '';
    }
    $time = current_time('mysql');
    $file = wp_handle_sideload($file_array, array('test_form' => false), $time);
    if (isset($file['error'])) {
        return new WP_Error('upload_error', $file['error']);
    }
    $url = $file['url'];
    $type = $file['type'];
    $file = $file['file'];
    $title = preg_replace('/\\.[^.]+$/', '', basename($file));
    $parent = (int) absint($post_id) > 0 ? absint($post_id) : 0;
    $attachment = array('post_mime_type' => $type, 'guid' => $url, 'post_parent' => $parent, 'post_title' => $title, 'post_content' => '');
    $id = wp_insert_attachment($attachment, $file, $parent);
    if (!is_wp_error($id)) {
        require_once ABSPATH . 'wp-admin/includes/image.php';
        $data = wp_generate_attachment_metadata($id, $file);
        wp_update_attachment_metadata($id, $data);
    }
    return $id;
}

 function it_regenerate_wp_images()
 {
     return false;
     set_time_limit(0);
     echo "<pre>";
     echo "Regenerating thumbnails...\n";
     $args = array('post_type' => 'attachment', 'numberposts' => -1, 'post_status' => null);
     $attachments = get_posts($args);
     if ($attachments) {
         echo count($attachments) . " images were found.\n";
         foreach ($attachments as $attachment) {
             $full_size_path = get_attached_file($attachment->ID);
             if (false === $full_size_path || !file_exists($full_size_path)) {
                 echo "Image ID " . $attachment->ID . " was not found.\n";
                 continue;
             }
             $meta_data = wp_generate_attachment_metadata($attachment->ID, $full_size_path);
             if (is_wp_error($meta_data)) {
                 echo "Image ID " . $attachment->ID . " raised an error: " . $mata_data->get_error_message() . "\n";
                 continue;
             }
             if (empty($meta_data)) {
                 echo "Image ID " . $attachment->ID . " failed with unknown reason\n";
                 continue;
             }
             wp_update_attachment_metadata($attachment->ID, $meta_data);
         }
         echo "Done.";
     }
     echo "</pre>";
 }

/**
 * Upload theme default site icon
 *
 * @return void
 */
function dswoddil_site_icon_upload()
{
    $image_name = 'site-icon';
    if (!function_exists('wp_update_attachment_metadata')) {
        require_once ABSPATH . 'wp-admin/includes/image.php';
    }
    if (!dswoddil_get_attachment_by_post_name('dswoddil-' . $image_name)) {
        $site_icon = get_template_directory() . '/img/' . $image_name . '.png';
        // create $file array with the indexes show below
        $file['name'] = $site_icon;
        $file['type'] = 'image/png';
        // get image size
        $file['size'] = filesize($file['name']);
        $file['tmp_name'] = $image_name . '.png';
        $file['error'] = 1;
        $file_content = file_get_contents($site_icon);
        $upload_image = wp_upload_bits($file['tmp_name'], null, $file_content);
        // Check the type of tile. We'll use this as the 'post_mime_type'.
        $filetype = wp_check_filetype(basename($upload_image['file']), null);
        $attachment = array('guid' => $upload_image['file'], 'post_mime_type' => $filetype['type'], 'post_title' => 'dswoddil-' . $image_name, 'post_content' => '', 'post_status' => 'inherit');
        //insert wordpress attachment of uploaded image to get attachmen ID
        $attachment_id = wp_insert_attachment($attachment, $upload_image['file']);
        //generate attachment thumbnail
        wp_update_attachment_metadata($attachment_id, wp_generate_attachment_metadata($attachment_id, $upload_image['file']));
        add_post_meta($attachment_id, '_wp_attachment_context', $image_name);
    }
}

 /** generate new image sizes for old uploads
  * 
  * @param mixed $out
  * @param int $id
  * @param string|array $size
  * @return mixed
  */
 function circleflip_make_missing_intermediate_size($out, $id, $size)
 {
     $skip_sizes = array('full', 'large', 'medium', 'thumbnail', 'thumb');
     if (is_array($size) || in_array($size, $skip_sizes)) {
         return $out;
     }
     // the size exists and the attachment doesn't have a pre-generated file of that size
     // or the intermediate size defintion changed ( during development )
     if (circleflip_intermediate_size_exists($size) && (!circleflip_image_has_intermediate_size($id, $size) || circleflip_has_intermediate_size_changed($id, $size))) {
         // get info registerd by add_image_size
         $size_info = circleflip_get_intermediate_size_info($size);
         // get path to the original file
         $file_path = get_attached_file($id);
         // resize the image
         $resized_file = image_make_intermediate_size($file_path, $size_info['width'], $size_info['height'], $size_info['crop']);
         if ($resized_file) {
             // we have a resized image, get the attachment metadata and add the new size to it
             $metadata = wp_get_attachment_metadata($id);
             $metadata['sizes'][$size] = $resized_file;
             if (wp_update_attachment_metadata($id, $metadata)) {
                 // update succeded, call image_downsize again , DRY
                 return image_downsize($id, $size);
             }
         } else {
             // failed to generate the resized image
             // call image_downsize with `full` to prevent infinit loop
             return image_downsize($id, 'full');
         }
     }
     // pre-existing intermediate size
     return $out;
 }

 public function import($attachment)
 {
     $saved_image = $this->_return_saved_image($attachment);
     if ($saved_image) {
         return $saved_image;
     }
     // Extract the file name and extension from the url
     $filename = basename($attachment['url']);
     if (function_exists('file_get_contents')) {
         $options = ['http' => ['user_agent' => 'Mozilla/5.0 (X11; Ubuntu; Linux i686 on x86_64; rv:49.0) Gecko/20100101 Firefox/49.0']];
         $context = stream_context_create($options);
         $file_content = file_get_contents($attachment['url'], false, $context);
     } else {
         $file_content = wp_remote_retrieve_body(wp_safe_remote_get($attachment['url']));
     }
     if (empty($file_content)) {
         return false;
     }
     $upload = wp_upload_bits($filename, null, $file_content);
     $post = ['post_title' => $filename, 'guid' => $upload['url']];
     $info = wp_check_filetype($upload['file']);
     if ($info) {
         $post['post_mime_type'] = $info['type'];
     } else {
         // For now just return the origin attachment
         return $attachment;
         //return new \WP_Error( 'attachment_processing_error', __( 'Invalid file type', 'elementor' ) );
     }
     $post_id = wp_insert_attachment($post, $upload['file']);
     wp_update_attachment_metadata($post_id, wp_generate_attachment_metadata($post_id, $upload['file']));
     update_post_meta($post_id, '_elementor_source_image_hash', $this->_get_hash_image($attachment['url']));
     $new_attachment = ['id' => $post_id, 'url' => $upload['url']];
     $this->_replace_image_ids[$attachment['id']] = $new_attachment;
     return $new_attachment;
 }

function process_attachment($post, $url)
{
    // if the URL is absolute, but does not contain address, then upload it assuming base_site_url
    //if ( preg_match( '|^/[\w\W]+$|', $url ) )
    //	$url = rtrim( $this->base_url, '/' ) . $url;
    global $url_remap;
    $upload = fetch_remote_file($url, $post);
    if (is_wp_error($upload)) {
        return $upload;
    }
    if ($info = wp_check_filetype($upload['file'])) {
        $post['post_mime_type'] = $info['type'];
    } else {
        return new WP_Error('attachment_processing_error', __('Invalid file type', 'wordpress-importer'));
    }
    $post['guid'] = $upload['url'];
    // as per wp-admin/includes/upload.php
    $post_id = wp_insert_attachment($post, $upload['file']);
    wp_update_attachment_metadata($post_id, wp_generate_attachment_metadata($post_id, $upload['file']));
    // remap resized image URLs, works by stripping the extension and remapping the URL stub.
    if (preg_match('!^image/!', $info['type'])) {
        $parts = pathinfo($url);
        $name = basename($parts['basename'], ".{$parts['extension']}");
        // PATHINFO_FILENAME in PHP 5.2
        $parts_new = pathinfo($upload['url']);
        $name_new = basename($parts_new['basename'], ".{$parts_new['extension']}");
        $url_remap[$parts['dirname'] . '/' . $name] = $parts_new['dirname'] . '/' . $name_new;
    }
    return $post_id;
}

 static function add_image($image_url)
 {
     if (empty($image_url)) {
         return FALSE;
     }
     // Add Featured Image to Post
     $upload_dir = wp_upload_dir();
     // Set upload folder
     $image_data = file_get_contents($image_url);
     // Get image data
     $filename = basename($image_url);
     // Create image file name
     // Check folder permission and define file location
     if (wp_mkdir_p($upload_dir['path'])) {
         $file = $upload_dir['path'] . '/' . $filename;
     } else {
         $file = $upload_dir['basedir'] . '/' . $filename;
     }
     // Create the image  file on the server
     file_put_contents($file, $image_data);
     // Check image file type
     $wp_filetype = wp_check_filetype($filename, NULL);
     // Set attachment data
     $attachment = array('post_mime_type' => $wp_filetype['type'], 'post_title' => sanitize_file_name($filename), 'post_content' => '', 'post_status' => 'inherit');
     // Create the attachment
     $attach_id = wp_insert_attachment($attachment, $file);
     // Include image.php
     require_once ABSPATH . 'wp-admin/includes/image.php';
     // Define attachment metadata
     $attach_data = wp_generate_attachment_metadata($attach_id, $file);
     // Assign metadata to attachment
     wp_update_attachment_metadata($attach_id, $attach_data);
     return $attach_id;
 }

 public function wpua_avatar_upload($file)
 {
     $filetype = wp_check_filetype($file->name);
     $media_upload = array();
     $media_upload['file'] = array('name' => $file->name, 'type' => $filetype['type'], 'tmp_name' => $file->path, 'error' => 0, 'size' => filesize($file->path));
     $media_file = wp_handle_upload($media_upload['file'], array('test_form' => false, 'test_upload' => false, 'action' => 'custom_action'));
     if ($media_file['file']) {
         $url = $media_file['url'];
         $filepath = $media_file['file'];
         if ($image_meta = @wp_read_image_metadata($filepath)) {
             if (trim($image_meta['title']) && !is_numeric(sanitize_title($image_meta['title']))) {
                 $title = $image_meta['title'];
             }
         }
         $attachment = array('guid' => $url, 'post_mime_type' => $filetype['type'], 'post_title' => $title);
         $attachment_id = wp_insert_attachment($attachment, $filepath);
         if (!is_wp_error($attachment_id)) {
             $this->delete_attachment_by_user($this->user_id);
             wp_update_attachment_metadata($attachment_id, wp_generate_attachment_metadata($attachment_id, $filepath));
             update_post_meta($attachment_id, '_wp_attachment_wp_user_avatar', $this->user_id);
             $arr = wp_get_attachment_image_src($attachment_id, 'full');
             $this->avatar_url = $arr[0];
             $this->avatar_filename = basename($filepath);
             $this->resource = $attachment_id;
             $saved = $this->save();
             if (!$saved) {
                 $this->delete_attachment($attachment_id);
                 return $saved;
             }
             return $saved;
         }
     } else {
         return WP_Error('file_upload_problem', __("Media avatar could't uploading please check you have right permission for uploads folder.", 'wp-user-avatar-pro'));
     }
 }

 public function regenerateThumbnails($image_id)
 {
     require_once 'wp-admin/includes/image.php';
     $fullsizepath = get_attached_file($image_id);
     $metadata = wp_generate_attachment_metadata($image_id, $fullsizepath);
     wp_update_attachment_metadata($image_id, $metadata);
 }

 function atp_plupload_action()
 {
     // check ajax noonce
     $imgid = $_POST["imgid"];
     check_ajax_referer($imgid . 'pluploadan');
     $post_id = isset($_POST['post_id']) ? intval($_POST['post_id']) : 0;
     // handle file upload
     $filename = $_FILES[$imgid . 'async-upload']['name'];
     $status = wp_handle_upload($_FILES[$imgid . 'async-upload'], array('test_form' => true, 'action' => 'plupload_action'));
     if (!isset($status['file'])) {
         continue;
     }
     $file_name = $status['file'];
     $name_parts = pathinfo($file_name);
     $name = trim(substr($filename, 0, -(1 + strlen($name_parts['extension']))));
     $attachment = array('post_mime_type' => $status['type'], 'guid' => $status['url'], 'post_parent' => $post_id, 'post_title' => $name, 'post_content' => '');
     $id = wp_insert_attachment($attachment, $file_name, $post_id);
     if (!is_wp_error($id)) {
         wp_update_attachment_metadata($id, wp_generate_attachment_metadata($id, $file_name));
         $new[] = $id;
     }
     // send the uploaded file url in response
     $upload_path = wp_get_attachment_url($id, true);
     if (preg_match_all('/[^\\?]+\\.(jpg|JPG|jpe|JPE|jpeg|JPEG|gif|GIF|png|PNG)/', $upload_path, $matches)) {
         $image_attributes = wp_get_attachment_image_src($id, 'thumbnail');
         // returns an array
         $uplaod_url = $image_attributes[0];
     } else {
         $uplaod_url = $upload_path;
     }
     $imagetest = array('url' => $status['url'], 'link' => get_edit_post_link($id), 'audioid' => $id, 'name' => $name, 'img' => $uplaod_url);
     echo json_encode($imagetest);
     //print_r ($imagetest);
     exit;
 }

 static function post_attachment($download, $product_id)
 {
     // $filename should be the path to a file in the upload directory.
     // example $filename = 'woocommerce_uploads/2015/07/aka_Matrix42_Tool_CleanDatabase_7.2.1.20150625.aka.zip';
     $download = json_decode($download);
     $filename = $download->file;
     $web_url = $download->web_url;
     $wp_upload_dir = wp_upload_dir();
     $file = $wp_upload_dir['path'] . '/' . $filename;
     //Check the type of file. We'll use this as the 'post_mime_type'.
     $filetype = wp_check_filetype(basename($file), null);
     $attachment = array('guid' => $wp_upload_dir['url'] . '/' . basename($file), 'post_mime_type' => $filetype['type'], 'post_title' => preg_replace('/\\.[^.]+$/', '', basename($file)), 'post_content' => '', 'post_status' => 'inherit');
     // Insert the attachment.
     $attach_id = wp_insert_attachment($attachment, $file, $product_id);
     // Make sure that this file is included, as wp_generate_attachment_metadata() depends on it.
     require_once ABSPATH . 'wp-admin/includes/image.php';
     // Generate the metadata for the attachment, and update the database record.
     $attach_data = wp_generate_attachment_metadata($attach_id, $file);
     wp_update_attachment_metadata($attach_id, $attach_data);
     // Get all existing post downloads and
     $files = array();
     $wc_product = wc_get_product($product_id);
     $untyped_array_of_downloads = $wc_product->get_files();
     foreach ($untyped_array_of_downloads as $download_key => $download_value) {
         $download_name = $download_value['name'];
         $download_url = $download_value['file'];
         $files[md5($download_url)] = array('name' => $download_name, 'file' => $download_url);
     }
     // Extend the existing post downloads by the new one
     $files[md5($download_url)] = array('name' => $filename, 'file' => $web_url);
     // Update post meta (_downloadable_files)
     update_post_meta($product_id, '_downloadable_files', $files);
     return 1;
 }

function create_png()
{
    $attachment = array('guid' => 'http://example.org/wp-content/uploads/2014/12/logo.png', 'post_mime_type' => 'image/png', 'post_title' => 'PNG', 'post_status' => 'inherit');
    $img = wp_insert_attachment($attachment, 'logo.png');
    wp_update_attachment_metadata($img, array('width' => 2448, 'height' => 3264, 'file' => '2014/12/logo.png', 'sizes' => array('thumbnail' => array('file' => 'logo-480x640.png', 'width' => 480, 'height' => 640), 'medium' => array('file' => 'logo-600x800.png', 'width' => 600, 'height' => 800), 'large' => array('file' => 'logo-1024x1365.png', 'width' => 1024, 'height' => 1365))));
    return $img;
}