PHP中通过加号合并数组的一个简单方法分享

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通常，我们合并多个数组用的是array_merge()函数，其实，PHP手册中关于数组操作符的介绍给了我们更简单的方法，那就是"+"号，看看下面的例子就明白了（详细了解） 代码：
复制代码 代码如下:
<?php
$a = array('a' => 'a', 'b' => 'b');
$b = array('c' => 'c', 'd' => 'd');
$c = $a + $b;
print('<pre>');
print_r($c);
print('</pre>');
?>

结果：
复制代码 代码如下:
Array
(
[a] => a
[b] => b
[c] => c
[d] => d
)

注意：加号和array_merge()函数还是有区别的，就是当用加号合并数组时，如果数组间存在同名的键，那么保留前面数组对应的键值，而array_merge()函数正好相反。

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