


This article mainly introduces the method of generating and parsing xml based on SimpleXML in PHP. It analyzes the specific operation skills of using PHP to generate and parse xml format data using SimpleXML in the form of a complete example. Friends who need it can refer to it
Xml will not be explained much. PHP also provides methods for operating XML. PHP can operate XML in many ways, such as domdocment, simplexml, xmlwriter, etc. The simplest one should be simplexml. This time, let’s talk about simplexml. Read and parse xml files or strings
1. Generate xml strings and files
<?php header("Content-type: text/html; charset=utf-8"); $xml=new SimpleXMLElement('<?xml version="1.0" encoding="utf-8"?><UsersInfo />'); $item=$xml->addchild("item"); $item->addchild("name","冯绍峰"); $item->addchild("age","30"); $item2=$xml->addchild("item"); $item2->addchild("name","潘玮柏"); $item2->addchild("age","29"); $item2->addAttribute("id","02"); header("Content-type: text/xml"); echo $xml->asXml(); $xml->asXml("student.xml"); ?>
The most important methods for generating xml are addchild, addAttribute, and asXml. If you just generate an xml file, you don’t need the header. The following is the display result of the browser
Isn’t it very simple?
2. simplexml parses xml files or strings
<?php header("Content-type: text/html; charset=utf-8"); $xml=simplexml_load_file("UserInfo.xml"); //通过children取得根节点下面的子项 for($i=0;$i<count($xml->children());$i++){ foreach ($xml->children()[$i] as $key => $value ) { echo "$key:$value"."<br/>"; } } ?>
The above method is suitable for parsing xml files. If it is an xml string, just change simplexml_load_file to simplexml_load_string. Children is used to obtain the root node or child node. The obtained node is an array necessary for direct traversal. Just add filtering conditions. The following is the result of analysis
By the way, post my xml file
<?xml version="1.0" encoding="UTF-8"?> <UsersInfo> <item> <name>潘玮柏</name> <address>上海市浦东新区</address> <song>快乐崇拜</song> </item> <item> <name>蔡依林</name> <address>上海市徐汇区</address> <song>独占神话</song> </item> </UsersInfo>
Related recommendations:
PHP xml parsing and generationSimpleXMLUsage introduction
php SimpleXML() function usage detailed explanation
php uses simplexml to parse xml
The above is the detailed content of PHP implements the method of generating and parsing xml based on SimpleXML. For more information, please follow other related articles on the PHP Chinese website!

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。


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