3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = []; $a[] .= 'why'; $a[] += 1; $a[] -= 2; $a[] /= 3; $a[] *= 4; $a[] %= 5; $a[] &= 6; $a[] |= 7; $a[] ^= 8; $a[] <<= 9; $a[] >>= 0; var_dump($a);
Output for 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 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.8
array(11) { [0]=> string(3) "why" [1]=> int(1) [2]=> int(-2) [3]=> int(0) [4]=> int(0) [5]=> int(0) [6]=> int(0) [7]=> int(7) [8]=> int(8) [9]=> int(0) [10]=> int(0) }
preferences:
165.32 ms | 405 KiB | 196 Q