Example of php automatically renaming files

//Automatically rename files
$file = dirname(__FILE__).'/New text document.txt';
echo L_rename($file);
function L_rename($file){
 $iCount = 0;
 $File_type = strrchr($file, '.');
 $FilePath = substr($file, 0, strrpos($file, '.'));
 while (true) {
 if (is_file($file)) {
 ++$iCount;
 $file = $FilePath . '('. $iCount .')' . $File_type;
 }else{
 break;
 }
 }
 if (fopen ($file, 'w')) {$Msg = 'Created successfully'.$file;}
 return $Msg;
}
?>