PHP 从 XML 文件加载不需要的元素
我不想使用此函数从 XML 文件加载一些数据：
public function getElements()
{
$elements = array();
$element = $this->documentElement->getElementsByTagName('elements')->item(0);
// checks if it has any immunities
if( isset($element) )
{
// read all immunities
foreach( $element->getElementsByTagName('element') as $v)
{
$v = $v->attributes->item(0);
// checks if immunity is set
if($v->nodeValue > 0)
{
$elements[$v->nodeName] = $v->nodeValue;
}
}
}
return $elements;
}
我不想从 XML 文件加载该元素：
<elements>
<element physicalPercent="10"/>
<element icePercent="10"/>
<element holyPercent="-10"/>
</elements>
我不想仅加载元素节点名称和节点值。
在我的查询循环中得到了这个代码：
$elements = $monster->getElements();
$elN = 0;
$elC = count($elements);
if(!empty($elements)) {
foreach($elements as $element => $value) {
$elN++;
$elements_string .= $element . ":".$value;
if($elC != $elN)
$elements_string .= ", ";
}
}
最后 - $elements_string 变量的输出是错误的：
earthPercent:50, holyPercent:50, firePercent:15, energyPercent:5, physicalPercent:25, icePercent:30, deathPercent:30firePercent:20, earthPercent:75firePercent:20, earthPercent:75firePercent:20, earthPercent:75physicalPercent:70, holyPercent:20, deathPerce
它应该而是返回：
physicalPercent：10，icePercent：10，holyPercent：-10
您能再帮我一次吗？:)
先谢谢您了。
I wan't to load some data from my XML file using this function:
public function getElements()
{
$elements = array();
$element = $this->documentElement->getElementsByTagName('elements')->item(0);
// checks if it has any immunities
if( isset($element) )
{
// read all immunities
foreach( $element->getElementsByTagName('element') as $v)
{
$v = $v->attributes->item(0);
// checks if immunity is set
if($v->nodeValue > 0)
{
$elements[$v->nodeName] = $v->nodeValue;
}
}
}
return $elements;
}
I wan't to load that elements from my XML file:
<elements>
<element physicalPercent="10"/>
<element icePercent="10"/>
<element holyPercent="-10"/>
</elements>
I wan't to load only element node name and node value.
Got this code in my query loop:
$elements = $monster->getElements();
$elN = 0;
$elC = count($elements);
if(!empty($elements)) {
foreach($elements as $element => $value) {
$elN++;
$elements_string .= $element . ":".$value;
if($elC != $elN)
$elements_string .= ", ";
}
}
And finally - the output of $elements_string variable is wrong:
earthPercent:50, holyPercent:50, firePercent:15, energyPercent:5, physicalPercent:25, icePercent:30, deathPercent:30firePercent:20, earthPercent:75firePercent:20, earthPercent:75firePercent:20, earthPercent:75physicalPercent:70, holyPercent:20, deathPerce
It should rather return:
physicalPercent:10, icePercent:10, holyPercent:-10
Could you help me one more time?:)
Thank you in advance.
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XML 解析器并不能神奇地知道您想要加载哪些元素以及不加载哪些元素 - 您必须自己过滤这些元素。然后，您必须决定在您发布的 getElements 函数中或您所称的“查询循环”中的何处过滤所需的元素。
getElements是否应该是某种必须返回所有元素的通用函数？然后你应该将该检查if($v->nodeValue > 0)更改为类似if(!empty($v->nodeValue))否则你不会得到“holyPercent”值，因为它是负数（并且旧表达式变为假）。然后在“查询循环”中，只需选择所需的元素：
Well the XML-Parser doesn't magically know which elements you want to load and which you won't - you have to filter this by yourself. Then you have to decide where you want to filter your desired elements in the
getElements-function you posted or in your "query loop" as you call it.Should the
getElementsbe some kind of general function which must return all elements? Then you should change that checkif($v->nodeValue > 0)to something likeif(!empty($v->nodeValue))otherwise you wont get the "holyPercent" value since this is negative (and the old expression becomes false).Then in your "query loop", just select your desired elements:
只是：
然后：
没有尝试它是否适用于[0]，通常我使用：
Just:
And then:
Didn't try if it works with [0], usually i use :