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run code in 300+ PHP versions simultaneously
<?php if (!interface_exists('Throwable', false)) { interface Throwable { } } if (!class_exists('Error', false)) { // We can't really avoid making this extend Exception in PHP 5. class Error extends Exception implements Throwable { } } if (!class_exists('TypeError', false)) { class TypeError extends Error { } }
Output for 5.0.2 - 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, 5.5.0 - 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 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.16, 8.3.0 - 8.3.3
Output for 5.0.0 - 5.0.1
Fatal error: Call to undefined function interface_exists() in /in/Qsse1 on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/Qsse1 on line 4
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/Qsse1 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Qsse1 on line 4
Process exited with code 255.

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