3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array1 = array('blue' => 1, 'red' => 2, 'green' => 3, 'purple' => 4); $array2 = array('green' => 5, 'red' => 6); print_r(array_intersect_key($array1, $array2,array('red')); ?>
Output for 5.3.0 - 5.3.21, 5.4.0 - 5.4.11
Parse error: syntax error, unexpected ';' in /in/g2mV5 on line 5
Process exited with code 255.
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166.1 ms | 1395 KiB | 41 Q