数据采集利器——PHP Simple HTML DOM Parser

PHP Simple HTML DOM Parser（PHP实现的简单的HTML DOM解析器）。

Description, Requirement & Features

• A HTML DOM parser written in PHP5+ let you manipulate HTML in a very easy way!
• Require PHP 5+.
• Supports invalid HTML.
• Find tags on an HTML page with selectors just like jQuery.
• Extract contents from HTML in a single line.

Download & Documents

• Download latest version form Sourceforge.
• Read Online Document.

Quick Start

• How to get HTML elements?

// Create DOM from URL or file  
 $html = <strong>file_get_html</strong>(‘http://www.google.com/’);

// Find all images  
 foreach($html-><strong>find</strong>(‘img’) as $element)  
 echo $element-><strong>src</strong> . ‘<br>’;

// Find all links  
 foreach($html-><strong>find</strong>(‘a’) as $element)  
 echo $element-><strong>href</strong> . ‘<br>’;

• How to modify HTML elements?

// Create DOM from string  
 $html = <strong>str_get_html</strong>(‘<div id="hello">Hello</div><div id="world">World</div>’);

$html-><strong>find</strong>(‘div’, 1)-><strong>class</strong> = ‘bar’;

$html-><strong>find</strong>(‘div[id=hello]’, 0)-><strong>innertext</strong> = ‘foo’;

echo $html; // Output: <div id="hello"><strong>foo</strong></div><div id="world" <strong>class="bar"</strong>>World</div>

• Extract contents from HTML

// Dump contents (without tags) from HTML  
 echo <strong>file_get_html</strong>(‘http://www.google.com/’)-><strong>plaintext</strong>;

• Scraping Slashdot!

// Create DOM from URL  
 $html = <strong>file_get_html</strong>(‘http://slashdot.org/’);

// Find all article blocks  
 foreach($html-><strong>find</strong>(‘div.article’) as $article) {  
 $item[‘title’]     = $article-><strong>find</strong>(‘div.title’, 0)-><strong>plaintext</strong>;  
 $item[‘intro’]    = $article-><strong>find</strong>(‘div.intro’, 0)-><strong>plaintext</strong>;  
 $item[‘details’] = $article-><strong>find</strong>(‘div.details’, 0)-><strong>plaintext</strong>;  
 $articles[] = $item;  
 }

print_r($articles);