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run code in 300+ PHP versions simultaneously
<?php interface classThing { public function getClass(); } class Something implements classThing { public function getClass() { return 'set'; } } $header = array(new Something); if ($header[0] instanceof classThing) { echo $header[0]->getClass(); } else { echo 'not set'; }
Output for 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, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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
set
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/u32qF on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING in /in/u32qF on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/u32qF on line 2
Process exited with code 255.

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