PHP合并数组我们可以使用array_merge()函数,array_merge()函数返回一个联合的数组。所得到的数组以第一个输入数组参数开始,按后面数组参数出现的顺序依次追加。其形式为:
array array_merge (array array1 array2…,arrayN)
下面是一个PHP合并数组的例子:
<?php $fruits = array("apple","banana","pear"); $numbered = array("1","2","3"); $cards = array_merge($fruits, $numbered); print_r($cards); // 输出结果: // Array ( [0] => apple [1] => banana [2] => pear [3] => 1 [4] => 2 [5] => 3 ) ?>
用PHP追加数组,使用array_merge_recursive(),将两个数组合并在一起,注意,与array_merge()函数是不一样的,array_merge()的两个数组有重复项时会覆盖掉,而array_merge_recursive()则不会。array_merge_recursive()语法:
array array_merge_recursive(array array1,array array2[…,array arrayN])
下面是一个PHP追加数组的例子:
<?php $fruit1 = array("apple" => "red", "banana" => "yellow"); $fruit2 = array("pear" => "yellow", "apple" => "green"); $result = array_merge_recursive($fruit1, $fruit2); print_r($result); // 输出结果: // Array ( [apple] => Array ( [0] => red [1] => green ) [banana] => yellow [pear] => yellow ) ?>
现在apple 指向一个数组,由两个颜色值组成的索引数组。