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Flatten an array in PHP

/ Published in: PHP
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This will outpu a numeric result array

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  1. function array_flatten($array, $flat = false)
  2. {
  3.     if (!is_array($array) || empty($array)) return '';
  4.     if (empty($flat)) $flat = array();
  5.  
  6.     foreach ($array as $key => $val) {
  7.       if (is_array($val)) $flat = array_flatten($val, $flat);
  8.       else $flat[] = $val;
  9.     }
  10.  
  11.     return $flat;
  12. }

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