WordPress 媒体库过滤不同类型的文件

上传的文件多了，在后台的媒体库要快速找到某些类型的文件，不是一件容易的事，所以我们最好是在媒体库中添加文件类型过滤功能。比如下图所示：

将下面的代码添加到主题的 functions.php

/**
 * WordPress 媒体库过滤不同类型的文件
 * https://www.wpdaxue.com/add-custom-media-type-filters.html
 */
add_filter( 'post_mime_types', 'modify_post_mime_types' );
function modify_post_mime_types( $post_mime_types ) {
	// 添加查询 application 这个大类的文件
	$post_mime_types['application'] = array( __( '应用文件' ), __( '管理应用文件' ), _n_noop( '应用文件 <span class="count">(%s)</span>', '应用文件 <span class="count">(%s)</span>' ) );
	// 添加查询 application 大类下的 ZIP 文件
	$post_mime_types['application/zip'] = array( __( 'ZIP' ), __( '管理ZIP文件' ), _n_noop( 'ZIP <span class="count">(%s)</span>', 'ZIP <span class="count">(%s)</span>' ) );
	return $post_mime_types;
}

你就可以看到上图的效果，我们只需要修改 post_mime_types 的类型参数和相应的文字即可。post_mime_types 默认允许的类型如下，分为 图像（image）、视频（Video）、文本（Text）、音频（Audio）和 应用（application） 五大类。上面的代码使用 $post_mime_types[‘application’] 查询的是 应用（application）这类文件；使用 $post_mime_types[‘application/zip’] 查询 应用 这个大类下的 zip 文件。你只要理解了，就可以根据自己的需求来改代码了。

array(
	// Image formats
	'jpg|jpeg|jpe'                 => 'image/jpeg',
	'gif'                          => 'image/gif',
	'png'                          => 'image/png',
	'bmp'                          => 'image/bmp',
	'tif|tiff'                     => 'image/tiff',
	'ico'                          => 'image/x-icon',

	// Video formats
	'asf|asx'                      => 'video/x-ms-asf',
	'wmv'                          => 'video/x-ms-wmv',
	'wmx'                          => 'video/x-ms-wmx',
	'wm'                           => 'video/x-ms-wm',
	'avi'                          => 'video/avi',
	'divx'                         => 'video/divx',
	'flv'                          => 'video/x-flv',
	'mov|qt'                       => 'video/quicktime',
	'mpeg|mpg|mpe'                 => 'video/mpeg',
	'mp4|m4v'                      => 'video/mp4',
	'ogv'                          => 'video/ogg',
	'webm'                         => 'video/webm',
	'mkv'                          => 'video/x-matroska',
	
	// Text formats
	'txt|asc|c|cc|h'               => 'text/plain',
	'csv'                          => 'text/csv',
	'tsv'                          => 'text/tab-separated-values',
	'ics'                          => 'text/calendar',
	'rtx'                          => 'text/richtext',
	'css'                          => 'text/css',
	'htm|html'                     => 'text/html',
	
	// Audio formats
	'mp3|m4a|m4b'                  => 'audio/mpeg',
	'ra|ram'                       => 'audio/x-realaudio',
	'wav'                          => 'audio/wav',
	'ogg|oga'                      => 'audio/ogg',
	'mid|midi'                     => 'audio/midi',
	'wma'                          => 'audio/x-ms-wma',
	'wax'                          => 'audio/x-ms-wax',
	'mka'                          => 'audio/x-matroska',
	
	// Misc application formats
	'rtf'                          => 'application/rtf',
	'js'                           => 'application/javascript',
	'pdf'                          => 'application/pdf',
	'swf'                          => 'application/x-shockwave-flash',
	'class'                        => 'application/java',
	'tar'                          => 'application/x-tar',
	'zip'                          => 'application/zip',
	'gz|gzip'                      => 'application/x-gzip',
	'rar'                          => 'application/rar',
	'7z'                           => 'application/x-7z-compressed',
	'exe'                          => 'application/x-msdownload',
	
	// MS Office formats
	'doc'                          => 'application/msword',
	'pot|pps|ppt'                  => 'application/vnd.ms-powerpoint',
	'wri'                          => 'application/vnd.ms-write',
	'xla|xls|xlt|xlw'              => 'application/vnd.ms-excel',
	'mdb'                          => 'application/vnd.ms-access',
	'mpp'                          => 'application/vnd.ms-project',
	'docx'                         => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
	'docm'                         => 'application/vnd.ms-word.document.macroEnabled.12',
	'dotx'                         => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
	'dotm'                         => 'application/vnd.ms-word.template.macroEnabled.12',
	'xlsx'                         => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
	'xlsm'                         => 'application/vnd.ms-excel.sheet.macroEnabled.12',
	'xlsb'                         => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
	'xltx'                         => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
	'xltm'                         => 'application/vnd.ms-excel.template.macroEnabled.12',
	'xlam'                         => 'application/vnd.ms-excel.addin.macroEnabled.12',
	'pptx'                         => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
	'pptm'                         => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
	'ppsx'                         => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
	'ppsm'                         => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12',
	'potx'                         => 'application/vnd.openxmlformats-officedocument.presentationml.template',
	'potm'                         => 'application/vnd.ms-powerpoint.template.macroEnabled.12',
	'ppam'                         => 'application/vnd.ms-powerpoint.addin.macroEnabled.12',
	'sldx'                         => 'application/vnd.openxmlformats-officedocument.presentationml.slide',
	'sldm'                         => 'application/vnd.ms-powerpoint.slide.macroEnabled.12',
	'onetoc|onetoc2|onetmp|onepkg' => 'application/onenote',
	
	// OpenOffice formats
	'odt'                          => 'application/vnd.oasis.opendocument.text',
	'odp'                          => 'application/vnd.oasis.opendocument.presentation',
	'ods'                          => 'application/vnd.oasis.opendocument.spreadsheet',
	'odg'                          => 'application/vnd.oasis.opendocument.graphics',
	'odc'                          => 'application/vnd.oasis.opendocument.chart',
	'odb'                          => 'application/vnd.oasis.opendocument.database',
	'odf'                          => 'application/vnd.oasis.opendocument.formula',
	
	// WordPerfect formats
	'wp|wpd'                       => 'application/wordperfect',
	
	// iWork formats
	'key'                          => 'application/vnd.apple.keynote',
	'numbers'                      => 'application/vnd.apple.numbers',
	'pages'                        => 'application/vnd.apple.pages',
)