Online PHP editor | output for nKLFs

<?php class Foo { protected $a = 'protected_prop'; private $b = 'private_prop'; function out(){ var_dump($this->a); var_dump($this->b); } } // reading $F = new Foo(); $data = (array)$F; var_dump($data["\0*\0a"]); var_dump($data["\0Foo\0b"]); // writing $F = serialize($F); $F = str_replace('protected_prop','new_protected_prop',$F); $F = str_replace('private_prop','new_private_prop',$F); $F = preg_replace_callback ( '!s:(\d+):"(.*?)";!', function($match) { return ($match[1] == strlen($match[2])) ? $match[0] : 's:' . strlen($match[2]) . ':"' . $match[2] . '";'; },$F ); $F = unserialize($F); if ($F instanceof Foo){ $F->out(); var_dump($F); }