How to upload file with unique name in php

This is the example to make unique file name with the help of random characters and upload the file............

	<?php
	//****** Function for generate random character *****************************/
	function randomGenerator($strlength)
	{
	$str="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
	$strshuf=str_shuffle($str);
	$start=rand(0,strlen($str) - $strlength);
	return substr(str_shuffle($strshuf),$start,$strlength);
	}
	$path_thumbs = "x:/projectname/uploads/"; //Upload Path
	$uploadfilename = "Attachfile"; //File name submitted by form
	$code = randomGenerator(5); //Generate random character
	$fileParts = pathinfo($_FILES[$uploadfilename]['name']);
	$file_name_only = stripslashes($fileParts['filename']);
	$extension = $fileParts['extension'];
	$UploadFileName = $file_name_only."_".$code.".$extension"; //Make a new file name
	move_uploaded_file($_FILES[$formname]["tmp_name"],$path_thumbs.$UploadFileName); //upload file
	?>

view raw uniquenameinphp.php hosted with ❤ by GitHub