PHP rename all variables inside code

Question

I would like to rename all variables within the file to random name.

For example his:
$example = 'some $string';
function ($variable2){
echo $variable2;
}
foreach($variable3 as $key => $var3val){
echo $var3val."somestring";
}

will become this:

$frk43r = 'some $string';
function ($izi34ee){
echo $izi34ee;
}
foreach($erew7er as $iure7 => $er3k2){
echo $er3k2."some$string";
}

It doesn't look so easy task so any suggestions will be helpful.

Answer 1

I believe you're referring to code obfuscation. There should be a program out there that can do that automatically, but you could always just open the PHP file up in a good text editor and find/replace for each variable if there aren't too many...