WordPress的媒体库默认只支持图片、视频和音频，有时候这些是不够用的，媒体库允许上传的文件种类众多，需要更细化的分类，比如pdf文件，今日就分享WordPress媒体库识别.pdf文件方法。
让媒体库支持pdf分类
这段来自tutsplus的代码可以帮助我们实现，将代码放到WordPress主题的functions.php中
代码如下
function modify_post_mime_types( $post_mime_types ) {
// 选择mime类型，这里用: \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’application/pdf\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’
// 然后扩充数组，定义label的文字
$post_mime_types[\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’application/pdf\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’] = array( __( \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’PDFs\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ ), __( \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Manage PDFs\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ ),
_n_noop( \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’PDF (%s)\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’, \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’PDFs (%s)\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ ) );
// then we return the $post_mime_types variable
return $post_mime_types;
}
// Add Filter Hook
add_filter( \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’post_mime_types\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’, \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’modify_post_mime_types\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ );
到媒体库中上传一个pdf文件，就可以看到效果了。
如何支持更多分类
WordPress支持的文件类型在wp_includes/functions.php中有写，搜索一下
代码如下:
function get_allowed_mime_types()
就可以找到这些类型
代码如下:
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’jpg|jpeg|jpe\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ => \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’image/jpeg\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’gif\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ => \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’image/gif\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’jpg\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ => \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’image/jpg\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’bmp\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ => \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’image/bmp\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’tif|tiff\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ => \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’image/tiff\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ico\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ => \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’image/x-icon\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’asf|asx|wax|wmv|wmx\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ => \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’video/asf\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’avi\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ => \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’video/avi\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’divx\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ => \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’video/divx\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’flv\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ => \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’video/x-flv\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’,
…
找到自己需要的类型，按照
代码如下:
$post_mime_types[\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’application/pdf\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’] = array( __( \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’PDFs\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ ), __( \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Manage PDFs\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ ),
_n_noop( \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’PDF (%s)\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’, \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’PDFs (%s)\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ ) );
的写法，将‘application/pdf’替换成需要的mime类型即可，后面的文字也要相应改一改。这是php中增加数组成员的方式，你当然可以增加更多数组元素实现支持多个自定义类型。
以上就是WordPress媒体库识别.pdf文件方法的详细内容，更多请关注WordPress主题站。
