以下这段代码会在文件名开头加上用户名
function git_upload_filter( $file ) {
global $current_user;
$user_name = empty( $current_user ) ? '' : $current_user->user_login;
$time = date( "YmdHis" );
$file['name'] = $user_name . "-" . $time . mt_rand( 1, 100 ) . "." . pathinfo( $file['name'], PATHINFO_EXTENSION );
return $file;
}
add_filter( 'wp_handle_upload_prefilter', 'git_upload_filter' );