php數組轉xml的遞迴實現

PHP中獎數組轉為xml的需求是常見的，而且實作方法也有很多種，百度找了一下各種實作方法，但基本上是藉組一些元件啥的。我就自己寫了一個字串拼組的方法，支援多維數組。僅供參考，不足之處敬請不吝賜教！

<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>

上面是實現的方法，第一個參數是你要轉換的數組，第二個可選參數設定是否需要加根節點，預設是需要的。

測試程式碼：

<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>);

程式碼執行後的結果為：

<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>

以上就介紹了php數組轉xml的遞歸實現，包括了方面的內容，希望對PHP教程有興趣的朋友有幫助。