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php使用unset()删除数组中某个单元(键)的方法_php技巧

WBOY
WBOYOriginal
2016-05-16 20:23:021630browse

本文实例讲述了php使用unset()删除数组中某个单元(键)的方法。分享给大家供大家参考。具体分析如下:

unset既可以删除变量,也可以删除数组中某个单元。但要注意的是,数组不会重建索引。

实例如下:

<&#63;php
$arr = array("朝阳区","海淀区","西城区","东城区","丰台区");
unset($arr[3]);
echo "<pre class="brush:php;toolbar:false">";
print_r($arr);
&#63;>

输出结果如下:

Array
(
  [0] => 朝阳区
  [1] => 海淀区
  [2] => 西城区
  [4] => 丰台区
)

希望本文所述对大家的php程序设计有所帮助。

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