PHP Rename File name if Exists Append Number to End

Question

I\'m trying to rename the file name of an image when it\'s uploaded if it exists, say if my file name is test.jpg and it already exists I want to rename it as

Answer 1

Inspired from @Jason answer, i created a function which i deemed shorter and more readable filename format.

function newName($path, $filename) {
    $res = "$path/$filename";
    if (!file_exists($res)) return $res;
    $fnameNoExt = pathinfo($filename,PATHINFO_FILENAME);
    $ext = pathinfo($filename, PATHINFO_EXTENSION);

    $i = 1;
    while(file_exists("$path/$fnameNoExt ($i).$ext")) $i++;
    return "$path/$fnameNoExt ($i).$ext";
}