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run code in 300+ PHP versions simultaneously
<?php $a = array(); for($i=0; $i<1000; $i++) for($z=0; $z<1000; $z++) $a[$i][$z]='123';
Output for 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 - 8.1.1, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Output for 8.1.2 - 8.1.27
Fatal error: Out of memory (allocated 31457280) (tried to allocate 36864 bytes) in /in/PO8oZ on line 6 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 72 bytes) in /in/PO8oZ on line 6
Process exited with code 255.

preferences:
239.11 ms | 402 KiB | 372 Q