如何使用public_path方法更改反斜杠以转发斜杠

I am using the IMAGINE package in laravel , I have the below line in laravel:

 $path = public_path('img\testsave\/' .$filename);

now I'm getting the following error:

C:\xampp\htdocs\lookinggood\public/img\testsave/2015-10-07-11-40-19-edit-one.jpgjpg does not exist.

The backslash after public needs to be changed to a forward slash. After testsave I am getting the \/ .

I have tried to escape the forward slash like so:

$path = public_path('img\testsave\/' .$filename);

So how do I change the backslash after public to a forwardslash and how do I successfully escape the forward slash after testsave ?

use implode and explode functions in php

to read more about these functions follow the links

implode : http://www.w3schools.com/php/func_string_implode.asp

explode : http://www.w3schools.com/php/func_string_explode.asp