<?php $array = [ 'key' => [ 'key_2' => [ 'key_3' => 'Value 3' ] ], ]; function get_value($array, $key ) { $keys = explode(",", str_replace(["[","]"], [",",""],$key)); Foreach($keys as $k){ $array = $array[$k]; } Return $array; } Var_dump(get_value($array, 'key[key_2][key_3]' ));
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