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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