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Array subval sort

/ Published in: PHP
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  1. function subval_sort($a,$subkey)
  2.   {
  3.     foreach($a as $k=>$v)
  4.     {
  5.       $b[$k] = strtolower($v[$subkey]);
  6.     }
  7.     arsort($b);
  8.     foreach($b as $key=>$val)
  9.     {
  10.       $c[] = $a[$key];
  11.     }
  12.     return $c;
  13.   }

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