cps.xml
<?xml version="1.0" encoding="gb2312" ?>
<cps>
<ad>
<id>1 </id>
<desc>简介 </desc>
<name>12 </name>
</ad>
<ad>
<id>2 </id>
<name>服务 </name>
<desc>推广 </desc>
</ad>
....
</cps>
怎么取出id 中最大的值,因为我要插数据,取最大id+1才可以
$dom = new DOMDocument;
$dom->load('cps.xml');
$xpath = new DOMXPath($dom);
$person = $xpath->query('/cps/ad/id');
foreach($ids as $e){
var_dump ( $id = $e->firstChild->nodeValue);
}
上面的方法是获取所有的ID的值,怎么取得最大哪个啊,用哪个方法了....
<?xml version="1.0" encoding="gb2312" ?>
<cps>
<ad>
<id>1 </id>
<desc>简介 </desc>
<name>12 </name>
</ad>
<ad>
<id>2 </id>
<name>服务 </name>
<desc>推广 </desc>
</ad>
....
</cps>
怎么取出id 中最大的值,因为我要插数据,取最大id+1才可以
$dom = new DOMDocument;
$dom->load('cps.xml');
$xpath = new DOMXPath($dom);
$person = $xpath->query('/cps/ad/id');
foreach($ids as $e){
var_dump ( $id = $e->firstChild->nodeValue);
}
上面的方法是获取所有的ID的值,怎么取得最大哪个啊,用哪个方法了....
..
..
..
..
$max = 0;
foreach($ids as $e){
$e->firstChild->nodeValue > $max && $max = $e->firstChild->nodeValue;
}
echo $max;
没有用过XML,
$dom = new DOMDocument;
$dom->load('cps.xml');
$xpath = new DOMXPath($dom);
$person = $xpath->query('/cps/ad/id');
//本人认为数据量越大,数组速度越占优势.
$xmlid=array();
foreach($ids as $e){
$xmlid[]=$e->firstChild->nodeValue;
}
sort($xmlid);
$len=count($xmlid)-1;
echo $xmlid[$len];
$maxId = 0;
if($id > $maxId) $maxId = $id;