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@ 2014-08-01T16:16:20Z

<?php

$buy_restrictions = array (
    0 =>
    array (
      'type' => '3',
      'value' => '314',
    ),
    1 =>
    array (
      'type' => '3',
      'value' => '571',
    ),
  );
  
$buyRestrictions = array_map(function($e){ return $e['type'] == 3 ? $e['value'] : 0;}, $buy_restrictions);

var_dump($buyRestrictions);

Output
Performance
VLD
References
Branches

array_map: documentation ( source)
var_dump: documentation ( source)

preferences:dark modelive preview

35.68 ms | 402 KiB | 5 Q