3v4l.org

run code in 300+ PHP versions simultaneously
<?php class tester { public $hello = 'lolphp'; public function doIt($id){ echo $$id; } } $ident = "$this->hello"; $t = new tester; $t->doIt($ident);
Output for 7.0.0 - 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
Fatal error: Uncaught Error: Using $this when not in object context in /in/7sSqo:10 Stack trace: #0 {main} thrown in /in/7sSqo on line 10
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Using $this when not in object context in /in/7sSqo on line 10
Process exited with code 255.
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250.12 ms | 402 KiB | 330 Q