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run code in 300+ PHP versions simultaneously
<?php function doSomething() { try { throw new Exception('a message that you\'ll never read because you\'re not actually doing anything with it.'); $foo = 'bar'; } catch (Exception $e) { $e->getMessage(); // and what are we doing with this message? Why aren't we bailing out of our f } return $foo; } doSomething();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Warning: Undefined variable $foo in /in/IOA5E on line 12
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: foo in /in/IOA5E on line 12
Output for 7.3.32 - 7.3.33

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