PHP实现的XML操作类【XML Library】
本文实例讲述了PHP实现的XML操作类。分享给大家供大家参考,具体如下:
这是一个接口程序,需要大量分析解析XML,PHP的xml_parse_into_struct()函数不能直接生成便于使用的数组,而SimpleXML扩展在PHP5中才支持,于是逛逛搜索引擎,在老外的网站上找到了一个不错的PHPXML操作类。
一、用法举例:
1、将XML文件解释成便于使用的数组:
<?php include('xml.php');//引用PHPXML操作类 $xml=file_get_contents('data.xml');//读取XML文件 //$xml=file_get_contents("php://input");//读取POST过来的输入流 $data=XML_unserialize($xml); echo'<pre>'; print_r($data); echo'</pre>'; ?>
data.xml文件:
<?xmlversion="1.0"encoding="GBK"?> <video> <upload> <videoid>998</videoid> <name><![CDATA[回忆未来]]></name> <memo><![CDATA[def]]></memo> <up_userid>11317</up_userid> </upload> </video>
利用该XML操作类生成的对应数组(汉字编码:UTF-8):
Array ( [video]=>Array ( [upload]=>Array ( [videoid]=>998 [name]=>回忆未来 [memo]=>def [up_userid]=>11317 ) ) )
2、将数组转换成XML文件:
<?php include('xml.php');//引用PHPXML操作类 $xml=XML_serialize($data); ?>
二、PHPXML操作类源代码:
<?php ################################################################################### #XML_unserialize:takesrawXMLasaparameter(astring) #andreturnsanequivalentPHPdatastructure ################################################################################### function&XML_unserialize(&$xml){ $xml_parser=&newXML(); $data=&$xml_parser->parse($xml); $xml_parser->destruct(); return$data; } ################################################################################### #XML_serialize:serializesanyPHPdatastructureintoXML #Takesoneparameter:thedatatoserialize.Mustbeanarray. ################################################################################### function&XML_serialize(&$data,$level=0,$prior_key=NULL){ if($level==0){ob_start();echo'<?xmlversion="1.0"?>',"\n";} while(list($key,$value)=each($data)) if(!strpos($key,'attr'))#ifit'snotanattribute #wedon'ttreatattributesbythemselves,soforanemptyemptyelement #thathasattributesyoustillneedtosettheelementtoNULL if(is_array($value)andarray_key_exists(0,$value)){ XML_serialize($value,$level,$key); }else{ $tag=$prior_key?$prior_key:$key; echostr_repeat("\t",$level),'<',$tag; if(array_key_exists("$keyattr",$data)){#ifthere'sanattributeforthiselement while(list($attr_name,$attr_value)=each($data["$keyattr"])) echo'',$attr_name,'="',htmlspecialchars($attr_value),'"'; reset($data["$keyattr"]); } if(is_null($value))echo"/>\n"; elseif(!is_array($value))echo'>',htmlspecialchars($value),"</$tag>\n"; elseecho">\n",XML_serialize($value,$level+1),str_repeat("\t",$level),"</$tag>\n"; } reset($data); if($level==0){$str=&ob_get_contents();ob_end_clean();return$str;} } ################################################################################### #XMLclass:utilityclasstobeusedwithPHP'sXMLhandlingfunctions ################################################################################### classXML{ var$parser;#areferencetotheXMLparser var$document;#theentireXMLstructurebuiltupsofar var$parent;#apointertothecurrentparent-theparentwillbeanarray var$stack;#astackofthemostrecentparentateachnestinglevel var$last_opened_tag;#keepstrackofthelasttagopened. functionXML(){ $this->parser=&xml_parser_create(); xml_parser_set_option(&$this->parser,XML_OPTION_CASE_FOLDING,false); xml_set_object(&$this->parser,&$this); xml_set_element_handler(&$this->parser,'open','close'); xml_set_character_data_handler(&$this->parser,'data'); } functiondestruct(){xml_parser_free(&$this->parser);} function&parse(&$data){ $this->document=array(); $this->stack=array(); $this->parent=&$this->document; returnxml_parse(&$this->parser,&$data,true)?$this->document:NULL; } functionopen(&$parser,$tag,$attributes){ $this->data='';#storestemporarycdata $this->last_opened_tag=$tag; if(is_array($this->parent)andarray_key_exists($tag,$this->parent)){#ifyou'veseenthistagbefore if(is_array($this->parent[$tag])andarray_key_exists(0,$this->parent[$tag])){#ifthekeysarenumeric #thisisthethirdorlaterinstanceof$tagwe'vecomeacross $key=count_numeric_items($this->parent[$tag]); }else{ #thisisthesecondinstanceof$tagthatwe'veseen.shiftaround if(array_key_exists("$tagattr",$this->parent)){ $arr=array('0attr'=>&$this->parent["$tagattr"],&$this->parent[$tag]); unset($this->parent["$tagattr"]); }else{ $arr=array(&$this->parent[$tag]); } $this->parent[$tag]=&$arr; $key=1; } $this->parent=&$this->parent[$tag]; }else{ $key=$tag; } if($attributes)$this->parent["$keyattr"]=$attributes; $this->parent=&$this->parent[$key]; $this->stack[]=&$this->parent; } functiondata(&$parser,$data){ if($this->last_opened_tag!=NULL)#youdon'tneedtostorewhitespaceinbetweentags $this->data.=$data; } functionclose(&$parser,$tag){ if($this->last_opened_tag==$tag){ $this->parent=$this->data; $this->last_opened_tag=NULL; } array_pop($this->stack); if($this->stack)$this->parent=&$this->stack[count($this->stack)-1]; } } functioncount_numeric_items(&$array){ returnis_array($array)?count(array_filter(array_keys($array),'is_numeric')):0; } ?>
PS:这里再为大家提供几款关于xml操作的在线工具供大家参考使用:
在线XML/JSON互相转换工具:
http://tools.jb51.net/code/xmljson
在线格式化XML/在线压缩XML:
http://tools.jb51.net/code/xmlformat
XML在线压缩/格式化工具:
http://tools.jb51.net/code/xml_format_compress
XML代码在线格式化美化工具:
http://tools.jb51.net/code/xmlcodeformat
更多关于PHP相关内容感兴趣的读者可查看本站专题:《PHP针对XML文件操作技巧总结》、《PHP数组(Array)操作技巧大全》、《php字符串(string)用法总结》、《PHP错误与异常处理方法总结》、《PHP运算与运算符用法总结》、《PHP网络编程技巧总结》、《PHP基本语法入门教程》、《php面向对象程序设计入门教程》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家PHP程序设计有所帮助。