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<?php $array = array( PHP_INT_MAX => 'MAX', PHP_INT_MIN => 'MIN', "9223372036854775808" => "Y" ); ksort( $array, SORT_NUMERIC ); var_dump( $array );
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.14
array(3) { [-9223372036854775808]=> string(3) "MIN" [9223372036854775807]=> string(3) "MAX" ["9223372036854775808"]=> string(1) "Y" }
Output for 4.4.0 - 4.4.9, 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.9, 5.2.15 - 5.2.17, 5.3.4 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Notice: Use of undefined constant PHP_INT_MIN - assumed 'PHP_INT_MIN' in /in/7SBeg on line 3 array(3) { ["PHP_INT_MIN"]=> string(3) "MIN" ["9223372036854775808"]=> string(1) "Y" [9223372036854775807]=> string(3) "MAX" }
Output for 5.2.10 - 5.2.14, 5.3.0 - 5.3.3
Notice: Use of undefined constant PHP_INT_MIN - assumed 'PHP_INT_MIN' in /in/7SBeg on line 3 array(3) { [-9223372036854775808]=> string(1) "Y" ["PHP_INT_MIN"]=> string(3) "MIN" [9223372036854775807]=> string(3) "MAX" }
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/7SBeg on line 3 Notice: Use of undefined constant PHP_INT_MIN - assumed 'PHP_INT_MIN' in /in/7SBeg on line 3 array(3) { ["PHP_INT_MAX"]=> string(3) "MAX" ["PHP_INT_MIN"]=> string(3) "MIN" ["9223372036854775808"]=> string(1) "Y" }

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63.86 ms | 411 KiB | 5 Q