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run code in 300+ PHP versions simultaneously
<?php $x = NAN; $y = NAN; var_dump($x != $y); var_dump(array($x => 1));
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(true) Deprecated: Implicit conversion from float NAN to int loses precision in /in/iBjCG on line 6 array(1) { [0]=> int(1) }
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
bool(true) array(1) { [0]=> int(1) }
Output for 4.3.6 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
bool(true) array(1) { [-9223372036854775808]=> int(1) }
Output for 4.3.0 - 4.3.5
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/iBjCG on line 3 Notice: Use of undefined constant NAN - assumed 'NAN' in /in/iBjCG on line 4 bool(false) array(1) { ["NAN"]=> int(1) }

preferences:
294.56 ms | 401 KiB | 459 Q