array_merge() 函数的用法

array_merge() 函数把两个或多个数组合并为一个数组。

例一：

<?php
$fruitArray = array("apple", "orange", "banana", "Peach", "pear");  
$vegArray = array("carrot", "green beans", "asparagus", "artichoke", "corn");  
$goodfoodArray = array_merge($fruitArray, $vegArray);
print_r($goodfoodArray);
?>

输出的结果是：

Array ( [0] => apple [1] => orange [2] => banana [3] => Peach [4] => pear [5] => carrot [6] => green beans [7] => asparagus [8] => artichoke [9] => corn ) 

例二：

<?php
$fruitArray = array("apple", "orange", "banana", "Peach", "pear");  
$vegArray = array("carrot", "green beans", "apple","asparagus", "artichoke", "corn");  
$goodfoodArray = array_merge($fruitArray, $vegArray);
print_r($goodfoodArray);
?>

输出的结果是：

Array ( [0] => apple [1] => orange [2] => banana [3] => Peach [4] => pear [5] => carrot [6] => green beans [7] => apple [8] => asparagus [9] => artichoke [10] => corn ) 

对比可以看到：键名是整数，如果其值相同，并不会覆盖原有的。数组的键名以 0 开始进行重新索引 。