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php递归调用删除数组空值元素的方法,递归数组
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php递归调用删除数组空值元素的方法,递归数组

Jun 13, 2016 am 09:05 AM
php array null value

php递归调用删除数组空值元素的方法,递归数组

本文实例讲述了php递归调用删除数组空值元素的方法。分享给大家供大家参考。具体如下:

该函数可以删除数组里的所有空值元素,包含空字符串,空的数组等等。

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function array_remove_empty($arr){

 $narr = array();

 while(list($key, $val) = each($arr)){

  if (is_array($val)){

   $val = array_remove_empty($val);

   // does the result array contain anything?

   if (count($val)!=0){

    // yes :-)

    $narr[$key] = $val;

   }

  }

  else {

   if (trim($val) != ""){

    $narr[$key] = $val;

   }

  }

 }

 unset($arr);

 return $narr;

}

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演示范例:
复制代码 代码如下:array_remove_empty(array(1,2,3,'',array(),4)) => returns array(1,2,3,4)

希望本文所述对大家的php程序设计有所帮助。

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