WordPress实现上传文件自动重命名的两种方法

//WordPress上传文件重命名
function git_upload_filter($file) {
	$time = date("YmdHis");
	$file['name'] = $time . "" . mt_rand(1, 100) . "." . pathinfo($file['name'], PATHINFO_EXTENSION);
	return $file;
}
add_filter('wp_handle_upload_prefilter', 'git_upload_filter');

//WordPress上传文件重命名
function rename_filename($filename) {
    $info = pathinfo($filename);
    $ext = emptyempty($info['extension']) ? '' : '.' . $info['extension'];
    $name = basename($filename, $ext);
    return substr(md5($name), 0, 20) . $ext;
}
add_filter('sanitize_file_name', 'rename_filename', 10);