php数组转xml的递归实现,php数组xml递归
php数组转xml的递归实现,php数组xml递归
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>
---------------------- ----------
更新:
在使用过程中发现下面格式的数组转换会出现问题:
<span>array</span><span>( </span>'item' => <span>array</span><span>( </span><span>array</span><span>( </span>'title' => 'qwe', 'description' => 'rtrt', 'picurl' => 'sdfsd', 'url' => 'ghjghj'<span> )</span>, <span>array</span><span>( </span>'title' => 'jyutyu', 'description' => 'werwe', 'picurl' => 'xcvxv', 'url' => 'ghjgh'<span> ) ) );</span>
转换出来的结果是:
<span><</span><span>xml</span><span>></span> <span><</span><span>item</span><span>></span> <span><</span><span>0</span><span>></span> <span><</span><span>title</span><span>></span> <span><![CDATA[</span><span>qwe</span><span>]]></span> <span></</span><span>title</span><span>></span> <span><</span><span>description</span><span>></span> <span><![CDATA[</span><span>rtrt</span><span>]]></span> <span></</span><span>description</span><span>></span> <span><</span><span>picurl</span><span>></span> <span><![CDATA[</span><span>sdfsd</span><span>]]></span> <span></</span><span>picurl</span><span>></span> <span><</span><span>url</span><span>></span> <span><![CDATA[</span><span>ghjghj</span><span>]]></span> <span></</span><span>url</span><span>></span> <span></</span><span>0</span><span>></span> <span><</span><span>1</span><span>></span> <span><</span><span>title</span><span>></span> <span><![CDATA[</span><span>jyutyu</span><span>]]></span> <span></</span><span>title</span><span>></span> <span><</span><span>description</span><span>></span> <span><![CDATA[</span><span>werwe</span><span>]]></span> <span></</span><span>description</span><span>></span> <span><</span><span>picurl</span><span>></span> <span><![CDATA[</span><span>xcvxv</span><span>]]></span> <span></</span><span>picurl</span><span>></span> <span><</span><span>url</span><span>></span> <span><![CDATA[</span><span>ghjgh</span><span>]]></span> <span></</span><span>url</span><span>></span> <span></</span><span>1</span><span>></span> <span></</span><span>item</span><span>></span> <span></</span><span>xml</span><span>></span>
通常情况下,上面转换出来的xml整<0><1>那层节点我们是不要的。但是在php中下标有不能同名,不能有多个item。怎么办呢?
我想了一个办法就是给item下下标,比如item[0],item[1],在转换过程中在去掉[]形式的下标,实现多个item节点并排。
函数修改后如下:
<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>$val</span><span>){ </span><span>//</span><span>去掉key中的下标[]</span> <span>$key</span> = <span>preg_replace</span>('/\[\d*\]/', '', <span>$key</span><span>); </span><span>if</span>(<span>is_array</span>(<span>$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>$str</span><span>; }</span>
那么上面需要转换的数组也需要跟着变动一下:
<span>$arr1</span> =<span>array</span><span>( </span>'item[0]' => <span>array</span><span>( </span>'title' => 'qwe', 'description' => 'rtrt', 'picurl' => 'sdfsd', 'url' => 'ghjghj'<span> )</span>, 'item[1]' => <span>array</span><span>( </span>'title' => 'jyutyu', 'description' => 'werwe', 'picurl' => 'xcvxv', 'url' => 'ghjgh'<span> ) );</span>
转换后的xml如下:
<span><</span><span>xml</span><span>></span> <span><</span><span>item</span><span>></span> <span><</span><span>title</span><span>></span> <span><![CDATA[</span><span>qwe</span><span>]]></span> <span></</span><span>title</span><span>></span> <span><</span><span>description</span><span>></span> <span><![CDATA[</span><span>rtrt</span><span>]]></span> <span></</span><span>description</span><span>></span> <span><</span><span>picurl</span><span>></span> <span><![CDATA[</span><span>sdfsd</span><span>]]></span> <span></</span><span>picurl</span><span>></span> <span><</span><span>url</span><span>></span> <span><![CDATA[</span><span>ghjghj</span><span>]]></span> <span></</span><span>url</span><span>></span> <span></</span><span>item</span><span>></span> <span><</span><span>item</span><span>></span> <span><</span><span>title</span><span>></span> <span><![CDATA[</span><span>jyutyu</span><span>]]></span> <span></</span><span>title</span><span>></span> <span><</span><span>description</span><span>></span> <span><![CDATA[</span><span>werwe</span><span>]]></span> <span></</span><span>description</span><span>></span> <span><</span><span>picurl</span><span>></span> <span><![CDATA[</span><span>xcvxv</span><span>]]></span> <span></</span><span>picurl</span><span>></span> <span><</span><span>url</span><span>></span> <span><![CDATA[</span><span>ghjgh</span><span>]]></span> <span></</span><span>url</span><span>></span> <span></</span><span>item</span><span>></span> <span></</span><span>xml</span><span>></span>

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