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<?php function flatArray($array) { $retval = array(); foreach ($array as $val) { if (is_array($val)) $retval = array_merge($retval, flatArray($val)); else $retval[] = $val; } return $retval; } $array1 = [['#90', '#91'], ['#92', '#93', '#94', '#95', '#96']]; $array2 = ['#82', '#83', '#84', '#85', '#86']; $array3 = [['#90', '#91', ['100', '101']], ['#92', '#93', '#94', '#95', '#96']]; print_r(flatArray($array1)); print_r(flatArray($array2)); print_r(flatArray($array3));
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Array ( [0] => #90 [1] => #91 [2] => #92 [3] => #93 [4] => #94 [5] => #95 [6] => #96 ) Array ( [0] => #82 [1] => #83 [2] => #84 [3] => #85 [4] => #86 ) Array ( [0] => #90 [1] => #91 [2] => 100 [3] => 101 [4] => #92 [5] => #93 [6] => #94 [7] => #95 [8] => #96 )

preferences:
108.93 ms | 407 KiB | 5 Q