PHP Array Operations--getting the last value of an array method _php tips

During the PHP development process, you may often need to retrieve an array to get the last health or value of the array. The cloud-dwelling community here summarizes three methods and describes the limitations of how they are used in some cases, according to their three methods.

<?php 
$array =array (1,2,3,4,5); 
Echo $array [Count ($array) -1];//computes the length of the array and then gets the last element of the array, and if the last element in the array contains a Non-numeric key, the result may be inconsistent with 
the expected//array of the number of key names- 
Echo ' <br> '; 
Echo End ($array);//point the array's internal pointer to the last cell, which applies to all arrays, 
echo ' <br> '; 
Rsort ($array);//The reverse ordering of pairs, if the array contains letters or Chinese characters, the result may not be expected, the most suitable for the number array 
echo $array [0]; 
>

Overall, PHP's built-in function end is the best way to do it. We can test it.

PHP value is easy, you can use the loop traversal, class pointer (personal), but if the last value of the array is also used to traverse the words is not a lot of performance ah??

Here are three ways to get the last value out of the array better:

? PHP
$array = Array (1,2,4,6,8);
Echo End ($array);
? > 

;? PHP
$array = Array (1,2,4,6,8);
echo Array_pop ($array);
? > 

;? PHP
$array = Array (1,2,4,6,8);
$k = Array_slice ($array, -1,1);
Print_r ($K); The result is a one-dimensional array

This is the three function of the value method, directly valid, on-demand choice

March 31, 2012 Edit: The second method has a disadvantage, the Array_pop () function will be the last number of the original data "out", which is equivalent to the meaning of shearing, the original data will not no longer have the last value