PHP function to create multi-layer (multi-level) directories

/**
 *Create multi-level directories based on the path path
 *$dir target directory $mode permissions, 0700 represents the highest permissions
*/
 function makedir( $dir , $mode = "0700" ) {
 if(strpos($dir , "/" ) ){
 $dir_path = "" ;
 $dir_info = explode ( "/" , $dir );
 foreach($dir_info as $key => $value ){
 $dir_path .= $value ;
 if (! file_exists($dir_path )){
 @mkdir ( $dir_path , $mode ) or die ( "Failed to create folder" );
 @ chmod ( $dir_path , $mode );
 } else {
 $dir_path .= "/" ;
 continue ;
 }
 $dir_path .= "/" ;
 }
 return $dir_path ;
 } else {
 @mkdir( $dir , $mode ) or die( "Creation failed, please check permissions " );
 @chmod ( $dir , $mode );
 return $dir ;
 }
 } //end makedir
//Call example
makedir( "0/1/2 /3/" );
?>