<?xml version="1.0" encoding="utf-8" ?>
<items>
<aaa>
</aaa>
<aaa>
</aaa>
<aaa>
<bbb>
</bbb>
<bbb>
</bbb>
<bbb>
<ccc>
Only this childnod what I need
</ccc>
<ccc>
And this one
</ccc>
</bbb>
</aaa>
</items>
我想用PHP解析上面给出的XML。我不知道如何获得这两个子节点。
当我使用下面的代码时,会触发错误:Warning: main() [function.main]: Cannot add element bbb number 2 when only 0 such elements exist in
<?php
header('Content-type:text/html; charset=utf-8');
$xml = simplexml_load_file('2.xml');
foreach ($xml->aaa[2]->bbb as $bbb){
echo $bbb[2]->$ccc; // wrong in here
echo $bbb[3]->$ccc;
}
?>
答案 0 :(得分:6)
使用xpath
$ccc = $xml->xpath('aaa/bbb/ccc');
foreach($ccc as $c){
echo (string)$c."<br/>";
}
结果:
Only this childnod what I need
And this one
此外,在您的初始尝试中,$bbb[3]
没有意义,因为您只有三个项目,从索引0开始。
答案 1 :(得分:4)
更具动态性的解决方案
<?php
header('Content-type:text/html; charset=utf-8');
$xml = simplexml_load_file('2.xml');
foreach ($xml->aaa as $aaa){
if ($aaa->bbb) {
foreach ($aaa->bbb as $bbb) {
if ($bbb->ccc)
foreach ($bbb->ccc as $ccc) {
echo $ccc;
}
}
}
}
}
?>
答案 2 :(得分:2)
我不知道如何使用simplexml的返回,但是从我的代码中看到的,这应该可行:
<?php
header('Content-type:text/html; charset=utf-8');
$xml = simplexml_load_file('2.xml');
echo $xml->aaa[2]->bbb[2]->ccc[0];
echo $xml->aaa[2]->bbb[2]->ccc[1];
?>