三种读取xml的方法!见人见智

使用 DOM 库读取 XML

<?php$doc = new DOMDocument();$doc->load( '1.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";}?>

用 SAX 解析器读取 XML

<?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( '1.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";}?>

用正则表达式解析 XML；

<?php$xml = "";$f = fopen( '1.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" );}?>