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run code in 300+ PHP versions simultaneously
<?php function foo() { $t = "this"; $$t = 5; extract(array("this" => "foo")); var_dump($this); } foo();
Output for 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Cannot re-assign $this in /in/rFJob:5 Stack trace: #0 /in/rFJob(10): foo() #1 {main} thrown in /in/rFJob on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20
string(3) "foo"

preferences:
215.25 ms | 403 KiB | 308 Q