How to "flatten" a multi-dimensional array to simple one in PHP? [duplicate]

Question

It's probably beginner question but I'm going through documentation for longer time already and I can't find any solution. I thought I could use implode for each dimension and then put those strings back together with str_split to make new simple array. However I never know if the join pattern isn't also in values and so after doing str_split my original values could break.

Is there something like combine($array1, $array2) for arrays inside of multi-dimensional array?

Answer 1

$array  = your array  $result = call_user_func_array('array_merge', $array);  echo "<pre>"; print_r($result); 

REF: http://php.net/manual/en/function.call-user-func-array.php

Here is another solution (works with multi-dimensional array) :

function array_flatten($array) {     $return = array();    foreach ($array as $key => $value) {        if (is_array($value)){ $return = array_merge($return, array_flatten($value));}        else {$return[$key] = $value;}    }    return $return;  }  $array  = Your array  $result = array_flatten($array);  echo "<pre>"; print_r($result);