Online PHP editor | refs for FV8pf

<?php class myClass { function abc() { echo file_get_contents('http://www.google.com'); $callback = function(){ //Here is the syntax error return 'Hello world!<br>'; }; return $GLOBALS['otherClass']->birds($callback); } } class otherClass { function birds($callback) { return $callback(); } } $GLOBALS['otherClass'] = new otherClass(); $myClass = new myClass(); echo $myClass->abc(); echo $myClass->abc();