使用phpsimplehtmldomparser解析html标签_PHP教程

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使用php simple html dom parser解析html标签 用了一下 PHP Simple HTML DOM Parser 解析HTML页面，感觉还不错，它能创建一个DOM tree方便你解析html里面的内容。用来抓东西挺好的。 附带一个例子，你也到sourceforge下载压缩包看里面的例子： Scraping data with PHP Simple HTML DOM Parser PHP Simple HTML DOM Parser , written in PHP5+, allows you to manipulate HTML in a very easy way. Supporting invalid HTML, this parser is better then other PHP scripts using complicated regexes to extract information from web pages. Before getting the necessary info, a DOM should be created from either URL or file. The following script extracts links & images from a website: view plain copy to clipboard print ? Php代码 // Create DOM from URL or file $html = file_get_html('http://www.microsoft.com/'); // Extract links foreach($html->find('a') as $element) echo $element->href . '
'; // Extract images foreach($html->find('img') as $element) echo $element->src . '
'; [php] // Create DOM from URL or file $html = file_get_html('http://www.microsoft.com/'); // Extract links foreach($html->find('a') as $element) echo $element->href . '
'; // Extract images foreach($html->find('img') as $element) echo $element->src . '
'; // Create DOM from URL or file $html = file_get_html('http://www.microsoft.com/'); // Extract links foreach($html->find('a') as $element) echo $element->href . '
'; // Extract images foreach($html->find('img') as $element) echo $element->src . '
'; The parser can also be used to modify HTML elements: view plain copy to clipboard print ? Php代码 // Create DOM from string $html = str_get_html('SimpleParser'); $html->find('div', 1)->class = 'bar'; $html->find('div[id=simple]', 0)->innertext = 'Foo'; // Output: FooParser echo $html; [php] // Create DOM from string $html = str_get_html('SimpleParser'); $html->find('div', 1)->class = 'bar'; $html->find('div[id=simple]', 0)->innertext = 'Foo'; // Output: FooParser echo $html; // Create DOM from string $html = str_get_html('SimpleParser'); $html->find('div', 1)->class = 'bar'; $html->find('div[id=simple]', 0)->innertext = 'Foo'; // Output: FooParser echo $html; Do you wish to retrieve content without any tags? view plain copy to clipboard print ? Php代码 echo file_get_html('http://www.yahoo.com/')->plaintext; [php] echo file_get_html('http://www.yahoo.com/')->plaintext; echo file_get_html('http://www.yahoo.com/')->plaintext;In the package files of this parser ([url]http://simplehtmldom.sourceforge.net/[/url]) you can find some scraping examples from digg, imdb, slashdot. Let’s create one that extracts the first 10 results (titles only) for the keyword “php” from Google: view plain copy to clipboard print ? Php代码 $url = 'http://www.google.com/search?hl=en&q=php&btnG=Search'; // Create DOM from URL $html = file_get_html($url); // Match all 'A' tags that have the class attribute equal with 'l' foreach($html->find('a[class=l]') as $key => $info) { echo ($key + 1).'. '.$info->plaintext."
\n"; } [php] $url = 'http://www.google.com/search?hl=en&q=php&btnG=Search'; // Create DOM from URL $html = file_get_html($url); // Match all 'A' tags that have the class attribute equal with 'l' foreach($html->find('a[class=l]') as $key => $info) { echo ($key + 1).'. '.$info->plaintext."
\n"; } $url = 'http://www.google.com/search?hl=en&q=php&btnG=Search'; // Create DOM from URL $html = file_get_html($url); // Match all 'A' tags that have the class attribute equal with 'l' foreach($html->find('a[class=l]') as $key => $info) { echo ($key + 1).'. '.$info->plaintext."
\n"; }NOTE Make sure to include the parser before using any functions of it: view plain copy to clipboard print ? Php代码 include 'simple_html_dom.php'; [php] include 'simple_html_dom.php'; include 'simple_html_dom.php';For more information regarding the usage of this function consider checking the ‘PHP Simple HTML Dom Parser’ Manual. To download the package files use the following URL: [url] 分享到：

http://www.bkjia.com/PHPjc/477857.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/477857.htmlTechArticle使用php simple html dom parser解析html标签 用了一下 PHP Simple HTML DOM Parser 解析HTML页面，感觉还不错，它能创建一个DOM tree方便你解析html里面的内...

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