3v4l.org

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<?php $a[] = &$a; var_dump(count($a, COUNT_RECURSIVE));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: count(): Recursion detected in /in/32qqh on line 4 int(1)
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: count(): recursion detected in /in/32qqh on line 4 int(1)
Output for 5.2.6 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
Warning: count(): recursion detected in /in/32qqh on line 4 int(3)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.5

Process exited with code 139.

preferences:
249.77 ms | 402 KiB | 353 Q