Beispielcode für die PHP-Methode zum Lesen von XML-Dateien

Das Beispiel in diesem Artikel fasst zusammen, wie PHP Dateien im XML-Format liest. Geben Sie es wie folgt als Referenz an alle weiter:

books.xml-Datei:

<books>
<book>
<author>Jack Herrington</author>
<title>PHP Hacks</title>
<publisher>O'Reilly</publisher>
</book>
<book>
<author>Jack Herrington</author>
<title>Podcasting Hacks</title>
<publisher>O'Reilly</publisher>
</book>
</books>

1. DOMDocument-Methode

<?php
$doc = new DOMDocument();
$doc->load( 'books.xml' );
$books = $doc->getElementsByTagName( "book" );
foreach( $books as $book ){
    $authors = $book->getElementsByTagName( "author" );
    $author = $authors->item(0)->nodeValue;
    $publishers = $book->getElementsByTagName( "publisher" );
    $publisher = $publishers->item(0)->nodeValue;
    $titles = $book->getElementsByTagName( "title" );
    $title = $titles->item(0)->nodeValue;
    echo "$title - $author - $publisher\n";
    echo "<br>";
}
?>

2. Verwenden Sie den SAX-Parser, um XML zu lesen:

<?php
$g_books = array();
$g_elem = null;
function startElement( $parser, $name, $attrs )
{
    global $g_books, $g_elem;
    if ( $name == 'BOOK' ) $g_books []= array();
    $g_elem = $name;
}
function endElement( $parser, $name )
{
    global $g_elem;
    $g_elem = null;
}
function textData( $parser, $text )
{
    global $g_books, $g_elem;
    if ( $g_elem == 'AUTHOR' ||$g_elem == 'PUBLISHER' ||$g_elem == 'TITLE' ){
        $g_books[ count( $g_books ) - 1 ][ $g_elem ] = $text;
    }
}
$parser = xml_parser_create();
xml_set_element_handler( $parser, "startElement", "endElement" );
xml_set_character_data_handler( $parser, "textData" );
$f = fopen( 'books.xml', 'r' );
while( $data = fread( $f, 4096 ) ){
    xml_parse( $parser, $data );
}
xml_parser_free( $parser );
foreach( $g_books as $book ){
    echo $book['TITLE']." - ".$book['AUTHOR']." - ";
    echo $book['PUBLISHER']."\n";
}
?>

3. Verwenden Sie regulären Ausdruck, um XML zu analysieren:

<?php
$xml = "";
$f = fopen( 'books.xml', 'r' );
while( $data = fread( $f, 4096 ) ) {
  $xml .= $data;
}
fclose( $f );
preg_match_all( "/\<book\>(.*?)\<\/book\>/s", $xml, $bookblocks );
foreach( $bookblocks[1] as $block ){
    preg_match_all( "/\<author\>(.*?)\<\/author\>/", $block, $author );
    preg_match_all( "/\<title\>(.*?)\<\/title\>/",  $block, $title );
    preg_match_all( "/\<publisher\>(.*?)\<\/publisher\>/", $block, $publisher );
    echo( $title[1][0]." - ".$author[1][0]." - ".$publisher[1][0]."\n" );
}
?>

4 .XML in Array

<?php
  $data = "<root><line /><content language=\"gb2312\">简单的XML数据</content></root>";
  $parser = xml_parser_create(); //创建解析器
  xml_parse_into_struct($parser, $data, $values, $index); //解析到数组
  xml_parser_free($parser); //释放资源
  //显示数组结构
  echo "\n索引数组\n";
  print_r($index);
  echo "\n数据数组\n";
  print_r($values);
?>

5. prüfen, ob XML gültig ist

<?php
  //创建XML解析器
  $xml_parser = xml_parser_create();
  //使用大小写折叠来保证能在元素数组中找到这些元素名称
  xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, true);
  //读取XML文件
  $xmlfile = "bb.xml";
  if (!($fp = fopen($xmlfile, "r")))
  {
    die("无法读取XML文件$xmlfile");
  }
  //解析XML文件
  $has_error = false;      //标志位
  while ($data = fread($fp, 4096))
  {
    //循环地读入XML文档，只到文档的EOF，同时停止解析
    if (!xml_parse($xml_parser, $data, feof($fp)))
    {
      $has_error = true;
      break;
    }
  }
  if($has_error)
  {
    echo "该XML文档是错误的！<br />";
    //输出错误行，列及其错误信息
    $error_line  = xml_get_current_line_number($xml_parser);
    $error_row  = xml_get_current_column_number($xml_parser);
    $error_string = xml_error_string(xml_get_error_code($xml_parser));
    $message = sprintf("［第%d行，%d列］：%s",
            $error_line,
            $error_row,
            $error_string);
    echo $message;
  }
  else
  {
    echo "该XML文档是结构良好的。";
  }
  //关闭XML解析器指针，释放资源
  xml_parser_free($xml_parser);
?>

6 > test.xml

test.php:

<?xml version="1.0" encoding="UTF-8" ?>
  <SBMP_MO_MESSAGE>
    <CONNECT_ID>100</CONNECT_ID>
    <MO_MESSAGE_ID>123456</MO_MESSAGE_ID>
    <RECEIVE_DATE>20040605</RECEIVE_DATE>
    <RECEIVE_TIME>153020</RECEIVE_TIME>
    <GATEWAY_ID>1</GATEWAY_ID>
    <VALID>1</VALID>
    <CITY_CODE>010</CITY_CODE>
    <CITY_NAME>北京</CITY_NAME>
    <STATE_CODE>010</STATE_CODE>
    <STATE_NAME>北京</STATE_NAME>
    <TP_PID>0</TP_PID>
    <TP_UDHI>0</TP_UDHI>
    <MSISDN>15933626501</MSISDN>
    <MESSAGE_TYPE>8</MESSAGE_TYPE>
    <MESSAGE>5618常年供应苗木，品种有玉兰、黄叶杨等。联系人：张三，电话：1234567890。</MESSAGE>
    <LONG_CODE>100</LONG_CODE>
    <SERVICE_CODE>9588</SERVICE_CODE>
  </SBMP_MO_MESSAGE>

Das obige ist der detaillierte Inhalt vonBeispielcode für die PHP-Methode zum Lesen von XML-Dateien. Für weitere Informationen folgen Sie bitte anderen verwandten Artikeln auf der PHP chinesischen Website!