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如何 将这个二维数组拆分后组成新的一维数组

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WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOriginal
2016-06-20 12:39:11991browse

array (size=4)
  0 => 
    array (size=1)
      'pid' => string '1' (length=1)
  1 => 
    array (size=1)
      'pid' => string '3' (length=1)
  2 => 
    array (size=1)
      'pid' => string '4' (length=1)
  3 => 
    array (size=1)
      'pid' => string '6' (length=1)
如何将这个二维数组拆分后组成像这样的一维数组
array (size=4)
      0=> string '1' (length=1),1=> string '3' (length=1),2=> string '4' (length=1),3=> string '6' (length=1)


回复讨论(解决方案)

$b = array_map(‘current, $a);

非常感谢你,用你的方法已解决。

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