Online PHP editor | refs for T4EOR

<?php class A { private $_foo = array(); public function bar($source) { $ref = &$this->_foo; $ref = array(); return preg_replace_callback( '/\\w+/', function ($m) use (&$ref) { $ref[] = $m[0]; return "(" . $m[0] . ")"; }, $source ); } public function foo() { print_r($this->_foo); } } $a = new A(); $a->bar("lorem ipsum dolor"); $a->foo();