php取xml数据,php xml解析

如何通过PHP生成和获取XML格式数据

1自己拼，XML编码

?php

header('Content-type:text/xml');

echo "?xml version='1.0' encoding='utf-8'";

echo "book";

echo "PHP";

echo "namePHP程序开发范例宝典/name";

echo "price 单位='元/本'89.00/price";

echo "date2007-09-01/date";

echo "/PHP";

echo "/book";

?

拼接的效果

2从数据库中查询再拼XML编码

?php

$dsn="mysql:host=localhost;dbname=test";

try {

$pdo = new PDO($dsn,'root','passwowd'); //初始化一个PDO对象，就是创建了数据库连接对象$pdo

$query="select * from book";   //定义SQL语句

$pdo-query('set names utf8');

$result=$pdo-prepare($query); //准备查询语句

$result-execute();       //执行查询语句，并返回结果集

$arr='';

while($res=$result-fetch()){

$arr.='PHPid'.$res[0].'/idname'.$res[1].'/namedate'.$res[2].'/date'.'price'.$res[3].'/price/PHP';

}

echo "?xml version='1.0' encoding='utf-8'?book".$arr.'/book';

} catch (PDOException $e) {

die ("Error!: ".$e-getMessage()."br");

}

?

拼接的效果

3使用ajax获取，DOM解析

!DOCTYPE html

html lang="en"

head

meta charset="UTF-8"

titlexml/title

/head

body

script

function check(){

var xhr=new XMLHttpRequest();

xhr.open('GET','xml.php');

xhr.onreadystatechange=function(){

if(xhr.readyState==4 xhr.status==200){

console.log(xhr.responseText);

//初始化 DOM解析对象

var domParser = new DOMParser();

//字符串解码为对象

var xmlDoc = domParser.parseFromString(xhr.responseText,'text/xml');

//按标签名获取元素 返回数组

var elements = xmlDoc.getElementsByTagName('PHP');

//拼接html格式字符串

var str ='trthid/ththname/ththdate/ththprice/th/tr';

for (var i=0;ielements.length;i++){

var id=elements[i].getElementsByTagName('id')[0].firstChild.nodeValue;

var name=elements[i].getElementsByTagName('name')[0].firstChild.nodeValue;

var date=elements[i].getElementsByTagName('date')[0].firstChild.nodeValue;

var price=elements[i].getElementsByTagName('price')[0].firstChild.nodeValue;

str+= 'trtd'+id+'/tdtd'+name+'/tdtd'+date+'/tdtd'+price+'/td/tr';

}

document.getElementById('table2').innerHTML=str;

}

};

xhr.send(null);

}

/script

button onclick="check();"点我/button

table id="table2" border="2" cellspacing="0"

/table

/body

/html

效果

1

2

补充：

使用JSON

1数据库查询，自己拼 JSON 编码

?php

$dsn="mysql:host=localhost;dbname=test";

try {

$pdo = new PDO($dsn,'root','password'); //初始化一个PDO对象，就是创建了数据库连接对象$pdo

$query="select * from book";   //定义SQL语句

$pdo-query('set names utf8');

$result=$pdo-prepare($query); //准备查询语句

$result-execute();       //执行查询语句，并返回结果集

$a=$arr='';

while($res=$result-fetch()){

$arr.='{"id":'.'"'.$res[0].'",'.'"name":'.'"'.$res[1].'",'.'"time":'.'"'.$res[2].'",'.'"jia":'.'"'.$res[3].'",'.'"zhe":'.'"'.$res[4].'",'.'"chu":'.'"'.$res[5].'"},';

}

echo $a="[".substr($arr,0,strlen($arr)-1)."]";

} catch (PDOException $e) {

die ("Error!: ".$e-getMessage()."br");

}

?

2数据库查询，函数 JSON 编码

?php

$dsn="mysql:host=localhost;dbname=test";

try {

$pdo = new PDO($dsn,'root','password'); //初始化一个PDO对象，就是创建了数据库连接对象$pdo

$query="select * from book";   //定义SQL语句

$pdo-query('set names utf8');

$result=$pdo-prepare($query); //准备查询语句

$result-execute();       //执行查询语句，并返回结果集

$res=$result-fetchAll();

//JSON 编码

echo json_encode($res);

} catch (PDOException $e) {

die ("Error!: ".$e-getMessage()."br/");

}

?

效果

3ajax获取，JSON解析

!DOCTYPE html

html lang="en"

head

meta charset="UTF-8"

titleJSON/title

/head

body

script

function check() {

var XHR = new XMLHttpRequest();

XHR.open('GET','JSON.php');

XHR.onreadystatechange = function (){

if(XHR.readyState == 4 XHR.status ==200){

var books =JSON .parse(XHR.responseText);

var books2='trthid/ththbookname/ththtime/ththprice/ththmarker/ththpublisher/th/tr'

for (var i=0;ibooks.length;i++){

books2+= 'trtd'+(books[i ].id)+'/tdtd'+(books[i ].name)+'/tdtd'+(books[i ].time)+'/tdtd'+(books[i ].jia)+'/tdtd'+(books[i ].zhe)+'/tdtd'+(books[i ].chu)+'/td/tr';

}

document.getElementById('table2').innerHTML=books2;

}

};

XHR.send(null);

}

/script

input type="button" value="点我" onclick="check();"

table id="table2" border="2" cellspacing="0"/table

/body

/html

相关问答

Q1: php 读取xml 用哪种方法好

1、首先我们做一个简单的xml文件

?xml version="1.0 encoding="UTF-8"?humanszhangyingname张映/namesex男/sexold28/old/zhangyingtanknametank/namesex男/sexold28/old/tank/humans

2、

php读取xml的几种方法：

1)DOMDocument读取xml

?php $doc = new DOMDocument(); $doc-load('person.xml'); //读取xml文件 $humans = $doc-getElementsByTagName( "humans" ); //取得humans标签的对象数组 foreach( $humans as $human ) { $names = $human-getElementsByTagName( "name" ); //取得name的标签的对象数组 $name = $names-item(0)-nodeValue; //取得node中的值，如name /name $sexs = $human-getElementsByTagName( "sex" ); $sex = $sexs-item(0)-nodeValue; $olds = $human-getElementsByTagName( "old" ); $old = $olds-item(0)-nodeValue; echo "$name - $sex - $old\n"; } ?

2)simplexml读取xml

?php $xml_array=simplexml_load_file('person.xml'); //将XML中的数据,读取到数组对象中 foreach($xml_array as $tmp){ echo $tmp-name."-".$tmp-sex."-".$tmp-old."br"; } ?

3)用php正则表达式来记取数据

?php $xml = ""; $f = fopen('person.xml', 'r'); while( $data = fread( $f, 4096 ) ) { $xml .= $data; } fclose( $f ); // 上面读取数据 preg_match_all( "/\humans\(.*?)\\/humans\/s", $xml, $humans ); //匹配最外层标签里面的内容 foreach( $humans[1] as $k=$human ) { preg_match_all( "/\name\(.*?)\\/name\/", $human, $name ); //匹配出名字 preg_match_all( "/\sex\(.*?)\\/sex\/", $human, $sex ); //匹配出性别 preg_match_all( "/\old\(.*?)\\/old\/", $human, $old ); //匹配出年龄 } foreach($name[1] as $key=$val){ echo $val." - ".$sex[$key][1]." - ".$old[$key][1]."br" ; } ?

4)xmlreader来读取xml数据

?php $reader = new XMLReader(); $reader-open('person.xml'); //读取xml数据 $i=1; while ($reader-read()) { //是否读取 if ($reader-nodeType == XMLReader::TEXT) { //判断node类型 if($i%3){ echo $reader-value; //取得node的值 }else{ echo $reader-value."br" ; } $i++; } } ?

Q2: PHP如何取XML中数据

转成数组

?php/*** function：使用字符串方式读XML文件* author：JetWu* date：2016.12.03**/$file = './write_str.xml';$con = file_get_contents($file); //XML标签配置$xmlTag = array( 'starttime', 'endtime', 'school'); $arr = array();foreach($xmlTag as $x) { preg_match_all("/".$x.".*\/".$x."/", $con, $temp); $arr[] = $temp[0];}//去除XML标签并组装数据$data = array();foreach($arr as $key = $value) { foreach($value as $k = $v) { $a = explode($xmlTag[$key].'', $v); $v = substr($a[1], 0, strlen($a[1])-2); $data[$k][$xmlTag[$key]] = $v; }}echo 'pre';print_r($data);

Q3: PHP 获取XML数据

给个小例子：

1.直接是xml字符串

?php

$string = XML

?xml version='1.0'? 

document

 titleForty What?/title

 fromJoe/from

 toJane/to

 body

  I know that's the answer -- but what's the question?

 /body

/document

XML;

$xml = simplexml_load_string($string);

print_r($xml);

? 

2. xml文件的

?php

if (file_exists('test.xml')) {

    $xml = simplexml_load_file('test.xml');

 

    print_r($xml);

} else {

    exit('Failed to open test.xml.');

}

?

Q4: PHP读取XML数据

编码问题,function

characterData改成如下

function

characterData($parser_instance,

$xml_data)

{

global

$name,$position;

$xml_data=iconv("utf-8","gb2312",$xml_data);//转换成gb2312

if($position)

echo

$xml_data."br";

if($name)

echo

$xml_data."br";

}

显示的那个页面也要有charset=gb2312