Home  >  Article  >  Backend Development  >  Introduction to how PHP determines whether a str string is XML format data

Introduction to how PHP determines whether a str string is XML format data

巴扎黑
巴扎黑Original
2017-09-08 15:11:411465browse

这篇文章主要介绍了php判断str字符串是否是xml格式数据的方法,结合实例形式较为详细的分析了php采用自定义函数针对xml格式数据进行验证的相关操作技巧,需要的朋友可以参考下

本文实例讲述了php判断str字符串是否是xml格式数据的方法。分享给大家供大家参考,具体如下:


<?php
//自定义xml验证函数xml_parser()
function xml_parser($str){
    $xml_parser = xml_parser_create();
    if(!xml_parse($xml_parser,$str,true)){
      xml_parser_free($xml_parser);
      return false;
    }else {
      return (json_decode(json_encode(simplexml_load_string($str)),true));
    }
}
//应用示例:
$xmlstr=<<<ETO
<?xml version="1.0" encoding="UTF-8"?>
<books>
  <book>
    <author>Jack Herrington</author>
    <title>PHP Hacks</title>
    <publisher>O&#39;Reilly</publisher>
  </book>
  <book>
    <author>Jack Herrington</author>
    <title>Podcasting Hacks</title>
    <publisher>O&#39;Reilly</publisher>
  </book>
  <book>
    <author>XML数据</author>
    <title>脚本之家</title>
    <publisher>tools.jb51.net</publisher>
  </book>
</books>
ETO;
$jsonstr=&#39;{ "tools": [ { "name":"css format" , "site":"http://tools.jb51.net/code/css" }, { "name":"json format" , "site":"http://tools.jb51.net/code/json" }, { "name":"pwd check" , "site":"http://tools.jb51.net/password/my_password_safe" } ] }&#39;;
if(xml_parser($xmlstr)){
 echo "\$xmlstr是xml格式数据";
}else{
 echo "\$xmlstr不是xml格式数据";
}
echo "<br/>";
if(xml_parser($jsonstr)){
 echo "\$jsonstr是xml格式数据";
}else{
 echo "\$jsonstr不是xml格式数据";
}
?>

运行结果:


$xmlstr是xml格式数据
$jsonstr不是xml格式数据

The above is the detailed content of Introduction to how PHP determines whether a str string is XML format data. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn