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<?php $foo = array(); $res = array_keys($foo); print $res;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Warning: Array to string conversion in /in/pM9nr on line 8 Array
Output for 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 - 7.3.31, 7.4.0 - 7.4.33
Notice: Array to string conversion in /in/pM9nr on line 8 Array
Output for 7.3.32 - 7.3.33
Array
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172.93 ms | 401 KiB | 292 Q