3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i=0;$i++;$i<100) { for ($j=0;$j++;$j<1000) { $x[$i][$j] = mt_rand(); } } $y = (array) $x; echo sizeof($y);
Output for 5.0.4 - 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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
Notice: Undefined variable: x in /in/fDVmq on line 10 0
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: x in /in/fDVmq on line 10 0
preferences:
152.98 ms | 402 KiB | 174 Q