php中奖数组转为xml的需求是常见的，而且实现方法也有很多种，百度找了一下各种实现方法，但是基本是借组一些组件啥的。我就自己写了一个字符串拼组的方法，支持多维数组。仅供参考，不足之处敬请不吝赐教！
<span>/*</span><span>*
* 将数组转换为xml
* @param array $data 要转换的数组
* @param bool $root 是否要根节点
* @return string xml字符串
* @author Dragondean
* @url http://www.cnblogs.com/dragondean
</span><span>*/</span><span>function</span> arr2xml(<span>$data</span>, <span>$root</span> = <span>true</span><span>){
</span><span>$str</span>=""<span>;
</span><span>if</span>(<span>$root</span>)<span>$str</span> .= "<xml>"<span>;
</span><span>foreach</span>(<span>$data</span><span>as</span><span>$key</span> => <span>$val</span><span>){
</span><span>if</span>(<span>is_array</span>(<span>$val</span><span>)){
</span><span>$child</span> = arr2xml(<span>$val</span>, <span>false</span><span>);
</span><span>$str</span> .= "<<span>$key</span>><span>$child</span></<span>$key</span>>"<span>;
}</span><span>else</span><span>{
</span><span>$str</span>.= "<<span>$key</span>><![CDATA[<span>$val</span>]]></<span>$key</span>>"<span>;
}
}
</span><span>if</span>(<span>$root</span>)<span>$str</span> .= "</xml>"<span>;
</span><span>return</span><span>$str</span><span>;
}</span>
上面是实现的方法，第一个参数是你要转换的数组，第二个可选参数设定是否需要加
测试代码：
<span>$arr</span>=<span>array</span>('a'=>'aaa','b'=><span>array</span>('c'=>'1234' , 'd' => "asdfasdf"<span>));
</span><span>echo</span> arr2xml(<span>$arr</span>);
代码执行后的结果为：
<span><</span><span>xml</span><span>><</span><span>a</span><span>></span><span><!</span><span>[CDATA[aaa]]</span><span>></span><span></</span><span>a</span><span>><</span><span>b</span><span>><</span><span>c</span><span>></span><span><!</span><span>[CDATA[1234]]</span><span>></span><span></</span><span>c</span><span>><</span><span>d</span><span>></span><span><!</span><span>[CDATA[asdfasdf]]</span><span>></span><span></</span><span>d</span><span>></</span><span>b</span><span>></</span><span>xml</span><span>></span>
立即学习“PHP免费学习笔记（深入）”；
以上就介绍了php数组转xml的递归实现，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。
