我们在使用wordpress网站的时候，上传附件经常会出现错误，显示无法上传这个类型文件。
如果需要拓展支持的附件类型可以通过下面的方法，增加文件类型。
限制类型可以在WordPress中的wp-include/functions.php的get_allowed_mime_types函数中找到
functionget_allowed_mime_types(){
static$mimes=false;
if(!$mimes){
//AcceptedMIMEtypesaresethereasPCREunlessprovided.
$mimes=apply_filters(‘upload_mimes’,array(
‘jpg|jpeg|jpe’=>‘image/jpeg’,
‘gif’=>‘image/gif’,
‘png’=>‘image/png’,
‘bmp’=>‘image/bmp’,
‘tif|tiff’=>‘image/tiff’,
‘ico’=>‘image/x-icon’,
‘asf|asx|wax|wmv|wmx’=>‘video/asf’,
‘avi’=>‘video/avi’,
‘divx’=>‘video/divx’,
‘flv’=>‘video/x-flv’,
‘mov|qt’=>‘video/quicktime’,
‘mpeg|mpg|mpe’=>‘video/mpeg’,
‘txt|c|cc|h’=>‘text/plain’,
‘rtx’=>‘text/richtext’,
‘css’=>‘text/css’,
‘htm|html’=>‘text/html’,
‘mp3|m4a’=>‘audio/mpeg’,
‘mp4|m4v’=>‘video/mp4′,
‘ra|ram’=>‘audio/x-realaudio’,
‘wav’=>‘audio/wav’,
‘ogg’=>‘audio/ogg’,
‘mid|midi’=>‘audio/midi’,
‘wma’=>‘audio/wma’,
‘rtf’=>‘application/rtf’,
‘js’=>‘application/javascript’,
‘pdf’=>‘application/pdf’,
‘doc|docx’=>‘application/msword’,
‘pot|pps|ppt|pptx’=>‘application/vnd.ms-powerpoint’,
‘wri’=>‘application/vnd.ms-write’,
‘xla|xls|xlsx|xlt|xlw’=>‘application/vnd.ms-excel’,
‘mdb’=>‘application/vnd.ms-access’,
‘mpp’=>‘application/vnd.ms-project’,
’swf’=>‘application/x-shockwave-flash’,
‘class’=>‘application/java’,
‘tar’=>‘application/x-tar’,
‘zip’=>‘application/zip’,
‘gz|gzip’=>‘application/x-gzip’,
‘exe’=>‘application/x-msdownload’,
//openofficeformats
‘odt’=>‘application/vnd.oasis.opendocument.text’,
‘odp’=>‘application/vnd.oasis.opendocument.presentation’,
‘ods’=>‘application/vnd.oasis.opendocument.spreadsheet’,
‘odg’=>‘application/vnd.oasis.opendocument.graphics’,
‘odc’=>‘application/vnd.oasis.opendocument.chart’,
‘odb’=>‘application/vnd.oasis.opendocument.database’,
‘odf’=>‘application/vnd.oasis.opendocument.formula’,
));
}
return$mimes;
}
以上传入 apply_filters函数中的Array，即使允许上传的类型列表，我们可以修改这个地方，以禁止或允许可以上传的文件类型。
例如我们想要允许rar文件上传，只需添加一行格式说明即可：
‘rar’=>‘application/rar’,
除了直接修改这个Array外，还有另外一种方法，可以修改wp-config.php文件，这个文件在WordPress的根目录下，在其中增加一行语句：
define(‘ALLOW_UNFILTERED_UPLOADS’,true);
这条语句将去除上传的文件类型限制，就可以支持任意格式了。
