Php 如何使用SimpleXmlElement编写CDATA?
我有以下代码来创建和更新xml文件:Php 如何使用SimpleXmlElement编写CDATA?,php,xml,simplexml,cdata,Php,Xml,Simplexml,Cdata,我有以下代码来创建和更新xml文件: <?php $xmlFile = 'config.xml'; $xml = new SimpleXmlElement('<site/>'); $xml->title = 'Site Title'; $xml->title->addAttribute('lang', 'en'); $xml->saveXML($xmlFile); ?> <?xml version="1.0"?>
<?php
$xmlFile = 'config.xml';
$xml = new SimpleXmlElement('<site/>');
$xml->title = 'Site Title';
$xml->title->addAttribute('lang', 'en');
$xml->saveXML($xmlFile);
?>
<?xml version="1.0"?>
<site>
<title lang="en">Site Title</title>
</site>
这将生成以下xml文件:
<?php
$xmlFile = 'config.xml';
$xml = new SimpleXmlElement('<site/>');
$xml->title = 'Site Title';
$xml->title->addAttribute('lang', 'en');
$xml->saveXML($xmlFile);
?>
<?xml version="1.0"?>
<site>
<title lang="en">Site Title</title>
</site>
网站名称
问题是:有没有一种方法可以使用此方法/技术添加CDATA来创建下面的xml代码
<?xml version="1.0"?>
<site>
<title lang="en"><![CDATA[Site Title]]></title>
</site>
明白了!我将代码改编自():
生成的XML文件:
<?xml version="1.0"?>
<site>
<title lang="en"><![CDATA[Site Title]]></title>
</site>
谢谢你这是我的这个类的版本,它有一个quick addChildWithCDATA方法,基于: 只需像这样使用它:
$node = new SimpleXMLElementExtended();
$node->addChildWithCDATA('title', 'Text that can contain any unsafe XML charachters like & and <>');
$node=new simplexmlementextended();
$node->addChildWithCDATA('title','Text,可包含任何不安全的XML字符,如&and');
如果不想扩展SimpleXMLElement,也可以为此创建一个帮助函数:
/**
* Adds a CDATA property to an XML document.
*
* @param string $name
* Name of property that should contain CDATA.
* @param string $value
* Value that should be inserted into a CDATA child.
* @param object $parent
* Element that the CDATA child should be attached too.
*/
$add_cdata = function($name, $value, &$parent) {
$child = $parent->addChild($name);
if ($child !== NULL) {
$child_node = dom_import_simplexml($child);
$child_owner = $child_node->ownerDocument;
$child_node->appendChild($child_owner->createCDATASection($value));
}
return $child;
};
类MySimpleXMLElement扩展了SimpleXMLElement{
公共函数addChildWithCData($name,$value){
$new=parent::addChild($name);
$base=dom\u import\u simplexml($new);
$docOwner=$base->ownerDocument;
$base->appendChild($docOwner->createCDATA节($value));
}
}
$simplexmlemntobj=新的mysimplexmlement(“”);
/*用法*/
/*标准*/
$simplexmlemntobj->addChild('Postcode','1111');
/*带CDATA*/
$simplexmlemntobj->addChildWithCData('State','Processing');
/*结果*/
/*
1111
*/
这是我的组合解决方案,可以使用CDATA添加子节点或将CDATA添加到节点
class SimpleXMLElementExtended extends SimpleXMLElement
{
/**
* Add value as CData to a given XML node
*
* @param SimpleXMLElement $node SimpleXMLElement object representing the child XML node
* @param string $value A text to add as CData
* @return void
*/
private function addCDataToNode(SimpleXMLElement $node, $value = '')
{
if ($domElement = dom_import_simplexml($node))
{
$domOwner = $domElement->ownerDocument;
$domElement->appendChild($domOwner->createCDATASection("{$value}"));
}
}
/**
* Add child node with value as CData
*
* @param string $name The child XML node name to add
* @param string $value A text to add as CData
* @return SimpleXMLElement
*/
public function addChildWithCData($name = '', $value = '')
{
$newChild = parent::addChild($name);
if ($value) $this->addCDataToNode($newChild, "{$value}");
return $newChild;
}
/**
* Add value as CData to the current XML node
*
* @param string $value A text to add as CData
* @return void
*/
public function addCData($value = '')
{
$this->addCDataToNode($this, "{$value}");
}
}
// Usage example:
$xml_doc = '<?xml version="1.0" encoding="utf-8"?>
<offers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1">
</offers>';
$xml = new SimpleXMLElementExtended($xml_doc);
$offer = $xml->addChild('o');
$offer->addAttribute('id', $product->product_id);
$offer->addAttribute('url', 'some url');
$cat = $offer->addChildWithCData('cat', 'Category description as CDATA');
// or
$cat = $offer->addChild('cat');
$cat->addCData('Category description as CDATA');
类SimpleXMLElementExtended扩展了SimpleXMLElement
{
/**
*将值作为CData添加到给定的XML节点
*
*@param simplexmlement$node表示子XML节点的simplexmlement对象
*@param string$value作为CData添加的文本
*@返回无效
*/
私有函数addCDATA节点(SimpleXMLElement$node,$value='')
{
如果($DOMELENT=dom\U import\U simplexml($node))
{
$domOwner=$domeElement->ownerDocument;
$doElement->appendChild($domOwner->createCDATASection(“{$value}”);
}
}
/**
*添加值为CData的子节点
*
*@param string$name要添加的子XML节点名称
*@param string$value作为CData添加的文本
*@return simplexmlement
*/
公共函数addChildWithCData($name='',$value='')
{
$newChild=parent::addChild($name);
如果($value)$this->addCDATA节点($newChild,“{$value}”);
返回$newChild;
}
/**
*将值作为CData添加到当前XML节点
*
*@param string$value作为CData添加的文本
*@返回无效
*/
公共函数addCData($value='')
{
$this->addCDataNode($this,“{$value}”);
}
}
//用法示例:
$xml\u doc='1
';
$xml=新的simplexmlementextended($xml\u doc);
$offer=$xml->addChild('o');
$offer->addAttribute('id',$product->product\u id);
$offer->addAttribute('url','someurl');
$cat=$offer->addChildWithCData('cat','Category description as CDATA');
//或
$cat=$offer->addChild('cat');
$cat->addCData(“类别描述为CDATA”);
看起来SimpleXML不支持创建CDATA节点。试试看,你为什么在乎<“代码>站点标题和
完全相同,只是其中一个使用了更多的字节,并且作为一个人更难阅读。@昆汀说得很好。这只是客户机的要求。@Quentin-CDATA的使用使编写更容易,因为您不必担心在数据中转义任何内容或使其成为严格的XML。例如,如果您编写了Site
Title
,它将破坏XML解析器(打开br标记而不关闭不是严格的XML),而Title]]>
则不会。因此,在处理客户机时,只使用CDATA通常更具可读性,而不是所有不可靠的转义,即非CDATA节点可能必须包含以避免CDATA。@JimboJonny-如果您是手工编写,这很好,但问题是如何从PHP生成它。公共函数addChildcdata($element\u name,$CDATA){$this->$element\u name=NULL;$this->$element\u name->addCData($cdata);}
这个添加到扩展类中的函数允许您直接附加cdata。我可以添加我的2c,当您加载它的文件时simplexml\u load\u file/string()
您可以简单地为它提供一个选项“LIBXML\u NOCDATA”?
class SimpleXMLElementExtended extends SimpleXMLElement
{
/**
* Add value as CData to a given XML node
*
* @param SimpleXMLElement $node SimpleXMLElement object representing the child XML node
* @param string $value A text to add as CData
* @return void
*/
private function addCDataToNode(SimpleXMLElement $node, $value = '')
{
if ($domElement = dom_import_simplexml($node))
{
$domOwner = $domElement->ownerDocument;
$domElement->appendChild($domOwner->createCDATASection("{$value}"));
}
}
/**
* Add child node with value as CData
*
* @param string $name The child XML node name to add
* @param string $value A text to add as CData
* @return SimpleXMLElement
*/
public function addChildWithCData($name = '', $value = '')
{
$newChild = parent::addChild($name);
if ($value) $this->addCDataToNode($newChild, "{$value}");
return $newChild;
}
/**
* Add value as CData to the current XML node
*
* @param string $value A text to add as CData
* @return void
*/
public function addCData($value = '')
{
$this->addCDataToNode($this, "{$value}");
}
}
// Usage example:
$xml_doc = '<?xml version="1.0" encoding="utf-8"?>
<offers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1">
</offers>';
$xml = new SimpleXMLElementExtended($xml_doc);
$offer = $xml->addChild('o');
$offer->addAttribute('id', $product->product_id);
$offer->addAttribute('url', 'some url');
$cat = $offer->addChildWithCData('cat', 'Category description as CDATA');
// or
$cat = $offer->addChild('cat');
$cat->addCData('Category description as CDATA');