xml解析

注：php实现的xml转array，采用的引用、递归知识点

<?php/** * Created by PhpStorm.* User: Administrator* Date: 2017/5/17* Time: 10:42*/class XmlToArray{    /**    * @param $file  xml文件地址或路径    * @param $version xml的版本号    * @param $encode  xml的编码    * @param $xmlRoot 根节点    */    public function __construct($file='',$version='1.0',$encode='utf-8',$xmlRoot='item'){        $this->file = $file;        $this->version = $version;        $this->encode = $encode;        $this->xmlRoot = $xmlRoot;    }    /**     * @name 将xml文件内容转为array     * @author jia253<[e-mail]> by 2017-05-19     */    public function xmlArray(){        $domComment = new \DOMDocument($this->version,$this->encode);        if(!file_exists($this->file)){            echo $this->file.'文件不存在';die;        }        $xml = file_get_contents($this->file);        //如果是utf-8的可以忽略下面这个步骤 以及后续的转化        $xml = mb_convert_encoding( $xml, "HTML-ENTITIES",$this->version); //将gbk的编码转成HTML-ENTITIES        //加载xml字符串源        $domComment->loadXML($xml);        $list = [];        $index = 0;        //获取根节点 遍历        foreach ($domComment->getElementsByTagName($this->xmlRoot) as $node){            foreach ($node->childNodes as $chlidNode){                if(isset($chlidNode->tagName)){                    $key = mb_convert_encoding($chlidNode->tagName,'utf-8','HTML-ENTITIES');                    if($chlidNode->childNodes->length > 1){                        $list['item'.$index][$key] = $this->digui($chlidNode,$list['item'.$index][$key]);                    }else{                        if(isset($chlidNode->tagName)){                            $value = mb_convert_encoding($chlidNode->nodeValue,'utf-8','HTML-ENTITIES');                            $list['item'.$index][$key] = $value;                        }                    }                }            }            if($index > 2){                break;            }            $index++;        }        return $list;    }    /**     * @name 递归处理xml内容各个节点     * @param $node     * @param $chlidArr 引用数组     * @return mixed     */    function digui($node,&$chlidArr){        $lastChild = $node->lastChild; //获取此节点的最后一个子节点 用来判断什么时候返回组装好的数组        $item = 0;        //遍历子节点        foreach ($node->childNodes as $chlidNode){            //每一个节点对应一个有tagName的对象和无#text类型的对象  故做此判断            if($chlidNode->tagName){                $chlidKey = mb_convert_encoding($chlidNode->tagName,'utf-8','HTML-ENTITIES');                if($chlidNode->childNodes->length > 1){                    //表示有子节点 递归开始                    if(isset($chlidArr[$chlidKey]) && !empty($chlidArr[$chlidKey])){                        //有可能有同名节点多个展示  故做此处理                        $chlidKey.='=>'.$item;                    }                    $item++;                    $this->digui($chlidNode,$chlidArr[$chlidKey]);                }else{                    $chlidValue =  mb_convert_encoding($chlidNode->nodeValue,'utf-8','HTML-ENTITIES');                    $chlidArr[$chlidKey] = $chlidValue;                }            }else{                //当是最后一个子节点时  返回组装好的数组                if($chlidNode === $lastChild){                    return $chlidArr;                }            }        }    }}