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run code in 300+ PHP versions simultaneously
<?php class Foo { var $modeMapping = array( 'bar' => 'Exception' ); public static function testing() { if (isset( self::$modeMapping[$mode] ) ) { return new self::$modeMapping[$mode]( ); } } }
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.1.20 - 7.1.25, 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
Output for 7.1.10

Process exited with code 137.
preferences:
174.85 ms | 401 KiB | 241 Q