修改Xml指定标签内容（我这是去掉指定标签内容的空格）
其实就是个很简单的方法，需要的盆友直接拿走。
test.xml
<span style="color: #0000ff;"></span><span style="color: #ff00ff;">xml version="1.0" encoding="UTF-8"</span><span style="color: #0000ff;">?></span>
<span style="color: #0000ff;"><span style="color: #800000;">DOCUMENT</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">item</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">key</span><span style="color: #0000ff;">></span>记录博客是一个很好的习惯<span style="color: #0000ff;"></span><span style="color: #800000;">key</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">url</span><span style="color: #0000ff;">></span>http://www.cnblogs.com/keerdi/p/5465549.html<span style="color: #0000ff;"></span><span style="color: #800000;">url</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>去除XML的空格<span style="color: #0000ff;"></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">content</span><span style="color: #0000ff;">></span>养成一个好习惯很重要， 这是一段有空 格的文件内容，<span style="color: #0000ff;"></span><span style="color: #800000;">content</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">date</span><span style="color: #0000ff;">></span>2016-1-12<span style="color: #0000ff;"></span><span style="color: #800000;">date</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">item</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">item</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">key</span><span style="color: #0000ff;">></span>大家一起来写博客<span style="color: #0000ff;"></span><span style="color: #800000;">key</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">url</span><span style="color: #0000ff;">></span>http://www.cnblogs.com/keerdi/p/5465549.html<span style="color: #0000ff;"></span><span style="color: #800000;">url</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>写博客可以增强记忆能力<span style="color: #0000ff;"></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">content</span><span style="color: #0000ff;">></span>一般安 装后的linux系统都是英文的界面，网上查 了一下各种说法 都有， 我只做了如下的配 置就好了，下载个中文包，改一下i18 n就完事了，并没有那么复杂<span style="color: #0000ff;"></span><span style="color: #800000;">content</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><span style="color: #800000;">date</span><span style="color: #0000ff;">></span>2016-1-12<span style="color: #0000ff;"></span><span style="color: #800000;">date</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">item</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">DOCUMENT</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
update.php
<span style="color: #000000;">php
</span><span style="color: #0000ff;">function</span><span style="color: #000000;"> actionGetXml(){
</span><span style="color: #800080;">$xmlpath</span> = 'test.xml'<span style="color: #000000;">;
</span><span style="color: #800080;">$xml</span> = <span style="color: #0000ff;">new</span> DOMDocument("1.0","UTF-8"<span style="color: #000000;">);
</span><span style="color: #800080;">$xml</span>->load(<span style="color: #800080;">$xmlpath</span><span style="color: #000000;">);
</span><span style="color: #800080;">$root</span> = <span style="color: #800080;">$xml</span>-><span style="color: #000000;">documentElement;
</span><span style="color: #008000;">//</span><span style="color: #008000;"> 获取标签总数</span>
<span style="color: #800080;">$nodes</span> = <span style="color: #800080;">$root</span>->getElementsByTagName("item"<span style="color: #000000;">);
</span><span style="color: #0000ff;">for</span>(<span style="color: #800080;">$i</span>=0;<span style="color: #800080;">$i</span>$nodes->length;<span style="color: #800080;">$i</span>++<span style="color: #000000;">){
</span><span style="color: #008000;">//</span><span style="color: #008000;"> 指定content标签，并获取content标签内容通过delTrim()方法去除所有空格</span>
<span style="color: #800080;">$str</span> = <span style="color: #800080;">$xml</span>->getElementsByTagName("content")->item(<span style="color: #800080;">$i</span><span style="color: #000000;">);
</span><span style="color: #008000;">//</span><span style="color: #008000;"> $str->nodeValue = "这里是要修改的内容";</span>
<span style="color: #800080;">$str</span>->nodeValue = <span style="color: #800080;">$this</span>->delTrim(<span style="color: #800080;">$str</span>-><span style="color: #000000;">nodeValue);
</span><span style="color: #800080;">$xml</span>->save("test.xml"<span style="color: #000000;">);
}
}
</span><span style="color: #008000;">//</span><span style="color: #008000;">删除空格</span>
<span style="color: #0000ff;">function</span> delTrim(<span style="color: #800080;">$object</span><span style="color: #000000;">) {
</span><span style="color: #800080;">$search</span> = <span style="color: #0000ff;">array</span>(" ", " ", "\t", "\n", "\r"<span style="color: #000000;">);
</span><span style="color: #800080;">$replace</span> = <span style="color: #0000ff;">array</span>("", "", "", "", ""<span style="color: #000000;">);
</span><span style="color: #0000ff;">return</span> <span style="color: #008080;">str_replace</span>(<span style="color: #800080;">$search</span>, <span style="color: #800080;">$replace</span>, <span style="color: #800080;">$object</span><span style="color: #000000;">);
}
</span>?>
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