3v4l.org

run code in 300+ PHP versions simultaneously
<?php $d = array ( array ( 'a1' => true, 'b1' => 'abc' , 'c1' => 'def' ), array ( 'a2' => true, 'b2' => 'fgh', 'c2' => 'ijk' , 'd2' => 'lmn' , 'e2' => 'opq' )); function flatten(array $array) { $result = array(); if (is_array($array)) { foreach ($array as $k => $v) { if (is_array($v)) { $result = array_merge($result, flatten($v)); } else { $result[$k] = $v; } } } return $result; } $dd = flatten($d); echo "<pre>"; print_r($dd); echo "</pre>"; ?>

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