Use php simple html dom parser to parse html tags_PHP tutorial

Use php simple html dom parser to parse html tags

Used it for a while

PHP Simple HTML DOM Parser

It feels good to parse HTML pages. It can create a DOM tree to facilitate you to parse the content in HTML. It's good for grabbing things.

Attached is an example. You can also download the compressed package from sourceforge to see the example inside:

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:

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Php code // 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:

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Php code // Create DOM from string

$html = str_get_html('

Simple

Parser

');

$html->find('div', 1)->class = 'bar';

$html->find('div[id=simple]', 0)->innertext = 'Foo';

// Output:

Foo

Parser

echo $html;

[php]

// Create DOM from string

$html = str_get_html('

Simple

Parser

');

$html->find('div', 1)->class = 'bar';

$html->find('div[id=simple]', 0)->innertext = 'Foo';

// Output:

Foo

Parser

echo $html;

// Create DOM from string

$html = str_get_html('

Simple

Parser

');

$html->find('div', 1)->class = 'bar';

$html->find('div[id=simple]', 0)->innertext = 'Foo';

// Output:

Foo

Parser

echo $html;

Do you wish to retrieve content without any tags?

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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:

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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:

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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]

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