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<?php if (debug_backtrace()) { return new class { public $bar; public function bing($foo = null) { if ($foo) $foo->bing(); } }; } $oldFoo = require(__FILE__); $newFoo = require(__FILE__); var_dump(get_class_methods($oldFoo)); var_dump(get_object_vars($oldFoo)); $newFoo->bing($oldFoo);
Output for 7.0.10 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [0]=> string(4) "bing" } array(1) { ["bar"]=> NULL }
Output for 7.0.0 - 7.0.9
array(1) { [0]=> string(3) "bar" } array(0) { } Fatal error: Uncaught Error: Call to undefined method class@anonymous::bing() in /in/H4q8L:7 Stack trace: #0 /in/H4q8L(18): class@anonymous->bing(Object(class@anonymous)) #1 {main} thrown in /in/H4q8L on line 7
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected 'class' (T_CLASS) in /in/H4q8L on line 4
Process exited with code 255.

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