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    php 使用expat方式解析xml文件操作示例

    栏目:代码类 时间:2019-11-26 15:07

    本文实例讲述了php 使用expat方式解析xml文件操作。分享给大家供大家参考,具体如下:

    test.xml:

    <?xml version="1.0" encoding="UTF-8"?>
    <notes>
     <note>
     <to>George</to>
     <from>John</from>
     <heading>Reminder</heading>
     <body>Don't forget the meeting!</body>
     </note>
     <note>
     <to>George2</to>
     <from>John2</from>
     <heading>Reminder2</heading>
     <body>Don't forget the meeting!2</body>
     </note>
     <instances>
     <instance st="192.168.234.121" />
     <instance st="192.168.234.28" />
     </instances>
    </notes>
    
    

    PHP文件:

    <?php
    // Initialize the XML parser
    $parser = xml_parser_create();
    // Function to use at the start of an element
    function start($parser, $element_name, $element_attrs)
    {
      switch ($element_name) {
        case "NOTE":
          echo "-- Note --<br />";
          break;
        case "TO":
          echo "To: ";
          break;
        case "FROM":
          echo "From: ";
          break;
        case "HEADING":
          echo "Heading: ";
          break;
        case "BODY":
          echo "Message: ";
      }
    }
    // Function to use at the end of an element
    function stop($parser, $element_name)
    {
      echo "<br />";
    }
    // Function to use when finding character data
    function char($parser, $data)
    {
      echo $data;
    }
    // Specify element handler
    xml_set_element_handler($parser, "start", "stop");
    // Specify data handler
    xml_set_character_data_handler($parser, "char");
    // Open XML file
    // $fp = fopen("test.xml", "r");
    // Read data
    // while ($data = fread($fp, 10)) {
    // xml_parse($parser, $data, feof($fp)) or die(sprintf("XML Error: %s at line %d", xml_error_string(xml_get_error_code($parser)), xml_get_current_line_number($parser)));
    // }
    // fclose($fp);
    $data = file_get_contents("test.xml");
    xml_parse($parser, $data) or die(sprintf("XML Error: %s at line %d", xml_error_string(xml_get_error_code($parser)), xml_get_current_line_number($parser)));
    // Free the XML parser
    xml_parser_free($parser);
    ?>
    
    

    运行结果:

    -- Note --
    To: George
    From: John
    Heading: Reminder
    Message: Don't forget the meeting!

    -- Note --
    To: George2
    From: John2
    Heading: Reminder2
    Message: Don't forget the meeting!2

    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》