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<?php $a=[5]; $a[]=$a; var_dump($a); print_r($a);
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(2) { [0]=> int(5) [1]=> array(1) { [0]=> int(5) } } Array ( [0] => 5 [1] => Array ( [0] => 5 ) )
preferences:
119.4 ms | 408 KiB | 181 Q