php获取数组最后一个元素的方法

2014-03-12 为码而活 PHP教程 关注683次 已收录
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正文概述

最后一个数组元素在php中方法有很多，一个是根据长度来取最大下标值，一个是使用end函数，还一个对数据进行排序之后最下标0即可下面我们一起来看看吧。

$array=array(1,2,3,4,5);  

echo $array[count($array)-1];//计算数组长度，然后获取数组最后一个元素，如果数组中最后一个元素含有非数字键名，结果可能跟预期不符合  

//适用于键名为数字的数组  

echo '<br>';  

echo end($array);//将数组的内部指针指向最后一个单元，适用于所有数组  

rsort($array);//对数组逆向排序，如果数组中含有字母或汉字，结果可能不符合预期，最适用于数字数组

echo $array[0];

删除最后一个元素,代码如下:

  1. <?php 
  2. $stack = array("orange", "banana", "apple", "raspberry"); 
  3. $fruit = array_pop($stack); 
  4. print_r($stack);//www.phpfensi.com 
  5. ?>  
  6. /*经过此操作后，$stack 将只有 3 个单元： 
  7. Array 
  8. ( 
  9.     [0] => orange 
  10.     [1] => banana 
  11.     [2] => apple 
  12. )*/ 
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