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run code in 150+ php & hhvm versions
Bugs & Features
<?php $foo = null; $name = 'this'; var_dump(array($$name)); var_dump(array(&$$name));
Output for 7.1.0
Notice: Undefined variable: this in /in/l5f5U on line 4 array(1) { [0]=> NULL } Fatal error: Uncaught Error: Cannot re-assign $this in /in/l5f5U:5 Stack trace: #0 {main} thrown in /in/l5f5U on line 5
Process exited with code 255.
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.14
Notice: Undefined variable: this in /in/l5f5U on line 4 array(1) { [0]=> NULL } array(1) { [0]=> &NULL }
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: this in /in/l5f5U on line 4 array(1) { [0]=> NULL } array(1) { [0]=> &NULL }