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run code in 300+ PHP versions simultaneously
<?php $array = array( 'egg' => true, 'cheese' => false, 'hair' => 765, 'goblins' => null, 'ogres' => 'no ogres allowed in this array' ); // Loose checking -- return values are in comments // First three make sense, last four do not echo in_array(null, $array); // true echo in_array(false, $array); // true echo in_array(765, $array); // true echo in_array(763, $array); // true echo in_array('egg', $array); // true echo in_array('hhh', $array); // true echo in_array(array(), $array); // true
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 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, 5.6.7 - 5.6.28, 7.0.0 - 7.0.14, 7.1.0 - 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
1111111
Output for 7.0.20

Process exited with code 137.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/hpJX3 on line 20
Process exited with code 255.
preferences:
202.92 ms | 401 KiB | 329 Q