Home >Backend Development >PHP Tutorial >php递归调用删除数组空值元素的方法_php技巧

php递归调用删除数组空值元素的方法_php技巧

WBOY
WBOYOriginal
2016-05-16 20:16:361260browse

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。

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn