3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(array(PHP_INT_MAX+1 => 'foo'));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Implicit conversion from float 9.223372036854776E+18 to int loses precision in /in/lBm4m on line 2 array(1) { [-9223372036854775808]=> string(3) "foo" }
Output for 4.4.0 - 4.4.9, 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, 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
array(1) { [-9223372036854775808]=> string(3) "foo" }
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4
Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/lBm4m on line 2 array(1) { [1]=> string(3) "foo" }

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314.65 ms | 402 KiB | 460 Q