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Convert array to XML format in PHP_PHP tutorial

WBOY
WBOYOriginal
2016-07-15 13:21:33942browse

最近公司要做一个API接口,输出格式要有JSON与XML格式, 在PHP中,输入JSON直接json_encode就可以,但输出XML没有提供函数,于是决定自己写一个。
<?php

/**
 * 数组转XML类库
 *  
 * @filesource ArrayToXML.php
 * @author	gentwolf
 * @version	1.0	2013/08/23
 *
 * 使用说明:
 * 	echo ArrayToXml::parse($array, &#39;root&#39;);
 */

class ArrayToXML {
	//文档对象
	private static $doc = NULL;
	//版本号
	private static $version = &#39;1.0&#39;;
	
	/**
	 * 初始化文档版本及编码
	 * 
	 * @param string $version	版本号
	 * @param string $encoding	XML编码
	 */
	public static function init($version, $encoding) {
		self::$doc = new DomDocument($version, $encoding);
        self::$doc->formatOutput = true;
	}
	
	/**
	 * 转换数组到XML
	 * 
	 * @param array $array		要转换的数组
	 * @param string $rootName	要节点名称
	 * @param string $version	版本号
	 * @param string $encoding	XML编码
	 * 
	 * @return string
	 */
	public static function parse($array, $rootName = &#39;root&#39;, $version = &#39;1.0&#39;, $encoding = &#39;UTF-8&#39;) {
		self::init($version, $encoding);
		
		//转换
		$node = self::convert($array, $rootName);
		self::$doc->appendChild($node);

		return self::$doc->saveXML();
	}
	
	/**
	 * 递归转换
	 * 
	 * @param array $array		数组
	 * @param string $nodeName	节点名称
	 * 
	 * @return object (DOMElement)
	 */
	private static function convert($array, $nodeName) {
		if (!is_array($array)) return false;
		
		//创建父节点
		$node = self::createNode($nodeName);
		
		//循环数组
		foreach ($array as $key => $value) {
			$element = self::createNode($key);
			
			//如果不是数组,则创建节点的值
			if (!is_array($value)) {
				$element->appendChild(self::createValue($value));
				$node->appendChild($element);
			} else {
				//如果是数组,则递归
				$node->appendChild(self::convert($value, $key, $element));
			}						
		}
		return $node;
	}
	
	private static function createNode($name) {
		$node = NULL;
		
		//如果是字符串,则创建节点
		if (!is_numeric($name)) {
			$node = self::$doc->createElement($name);
		} else {
			//如果是数字,则创建默认item节点
			$node = self::$doc->createElement(&#39;item&#39;);
		}
		
		return $node;
	}
	
	/**
	 * 创建文本节点
	 * 
	 * @param string || bool || integer $value
	 * 
	 * @return object (DOMText || DOMCDATASection );
	 */
	private static function createValue($value) {
		$textNode = NULL;
		
		//如果是bool型,则转换为字符串
		if (true === $value || false === $value) {
			$textNode = self::$doc->createTextNode($value ? &#39;true&#39; : &#39;false&#39;);
		} else {
			//如果含有HTML标签,则创建CDATA节点
			if (strpos($value, &#39;<&#39;) > -1) {
				$textNode = self::$doc->createCDATASection($value);
			} else {
				$textNode = self::$doc->createTextNode($value);
			}
		}

		return $textNode;
	}
}

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/477156.htmlTechArticleRecently, the company is going to make an API interface. The output format must be JSON and XML format. In PHP, input JSON directly json_encode is fine, but there is no function provided for outputting XML, so I decided to write one myself...
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