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<?php class Test{ public $y; function x(){ print 'asd'; } function y(){} function __construct(){ $test = 'y'; if($this->$test() === TRUE){ echo 12345; } } } $x = new Test(); $x->y = function(){print 222;}; echo serialize($x);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Exception: Serialization of 'Closure' is not allowed in /in/nvr5i:20 Stack trace: #0 /in/nvr5i(20): serialize(Object(Test)) #1 {main} thrown in /in/nvr5i on line 20
Process exited with code 255.

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