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<?php class myClass { function abc() { $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();
Output for git.master, git.master_jit, rfc.property-hooks
Hello world!<br>Hello world!<br>

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