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Homephp教程php手册php递归调用删除数组空值元素的方法,递归数组

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。

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;
}

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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