正则表达式/DOM读取xml,php/dom编写xml

怎甘沉沦 提交于 2020-03-18 10:21:47
<?php echo "<br/>====================DOM读取xml===========================<br/>"; $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 - $publishern"; } echo "<br/>=========================================================================<br/>"; ?> <?php echo "<br/>===================解析器-读取xml===========================<br/>"; $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"; } echo "<br/>=========================================================================<br/>"; ?> <?php echo "<br/>=================正则表达式 读取xml===========================<br/>"; $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" ); } echo "<br/>=========================================================================<br/>"; ?> <?php echo "<br/>===================清单 5. 用 DOM 编写图书 XML================<br/>"; $books = array(); $books [] = array( 'title' => 'PHP Hacks', 'author' => 'Jack Herrington', 'publisher' => "O'Reilly" ); $books [] = array( 'title' => 'Podcasting Hacks', 'author' => 'Jack Herrington', 'publisher' => "O'Reilly" ); $doc = new DOMDocument(); $doc->formatOutput = true; $r = $doc->createElement( "books" ); $doc->appendChild( $r ); foreach( $books as $book ) { $b = $doc->createElement( "book" ); $author = $doc->createElement( "author" ); $author->appendChild( $doc->createTextNode( $book['author'] ) ); $b->appendChild( $author ); $title = $doc->createElement( "title" ); $title->appendChild( $doc->createTextNode( $book['title'] ) ); $b->appendChild( $title ); $publisher = $doc->createElement( "publisher" ); $publisher->appendChild( $doc->createTextNode( $book['publisher'] ) ); $b->appendChild( $publisher ); $r->appendChild( $b ); } echo $doc->saveXML(); ?> <?php echo "<br/>===================PHP 编写图书 XML================<br/>"; $books = array(); $books [] = array( 'title' => 'PHP Hacks', 'author' => 'Jack Herrington', 'publisher' => "O'Reilly" ); $books [] = array( 'title' => 'Podcasting Hacks', 'author' => 'Jack Herrington', 'publisher' => "O'Reilly" ); ?> <books> <?php foreach( $books as $book ) { ?> <book> <title><?php echo( $book['title'] ); ?></title> <author><?php echo( $book['author'] ); ?> </author> <publisher><?php echo( $book['publisher'] ); ?> </publisher> </book> <?php } ?> </books> books.xml内容如下: <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> http://www.xieguang133.com
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