PHP HTML DOM Parser - Printable Version

PHP HTML DOM Parser - Printable Version

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PHP HTML DOM Parser - hackarchives - 01-26-2013

The HTML DOM defines a standard way for accessing and manipulating HTML documents.
What we are going to do is to read a document using PHP Simple HTML DOM Parser and then manipulate it according to our needs

DOWNLOAD
Download The script form here and extract it

Now we need to create a PHP file to start using the script.
Firstly, include simple_html_dom.php in the php file

PHP Code:
<?php
include('simple_html_dom.php');
?>

Now we need to access a page and manipulate it according to our needs.
we will first get the contents of the page.

PHP Code:
<?php
include('simple_html_dom.php');
$html = file_get_html('http://yoururlhere');
?>

Now your whole page is stored in $html.Yo can test it by echoing it

To access elements using this script we use foreach loop.

1.Accessing links

PHP Code:
<?php
include('simple_html_dom.php');
$html = file_get_html('http://yoururlhere');
foreach($html->find('a') as $element)
echo $element->href . ' - '.$element->innerhtml; 
?>

As you may have noticed in the script above we used find() function to find an element and so is its use.You may use other tags like img,h1,h2,title etc. on it to find them in a document.

$element->href - This gets the url the link is pointing to.It basically got the href attribute.

Note:You may replace href by any attribute you wish to get

$element->innerhtml - This gets the text between <a> and </a> tags

2.Accessing Images

PHP Code:
<?php
include('simple_html_dom.php');
$html = file_get_html('http://yoururlhere');
foreach($html->find('img') as $element)
echo $element->src; 
?>

Like in the example above you used find('img') to find all the image tags and then you used $element->src to get the src attribute.Likewise you may get any attribute you want.

3.Getting elements with a particular id or class

PHP Code:
<?php
include('simple_html_dom.php');
$html = file_get_html('http://yoururlhere');
foreach($html->find('#xyz') as $element)
echo $element; 
?>

find('#xyz') finds all the elements with id xyz.You can later use them anyway you want.Use .xyz if you want to find elements with class xyz

4.Getting Div with particular class

PHP Code:
<?php
include('simple_html_dom.php');
$html = file_get_html('http://yoururlhere');
foreach($html->find('div.xyz') as $element)
echo $element; 
?>

find('div.xyz') finds all the div tags with class as xyz

5.Getting all elements that has a certain attribute

PHP Code:
<?php
include('simple_html_dom.php');
$html = file_get_html('http://yoururlhere');
foreach($html->find('*[xyz]') as $element)
echo $element; 
?>

find('*[xyz]') does the task. * operator makes the script to gets all the element and then [xyz] finds the elements with xyz attribute .

6.Getting some elements with some attribute

PHP Code:
<?php
include('simple_html_dom.php');
$html = file_get_html('http://yoururlhere');
foreach($html->find('abc[xyz]') as $element)
echo $element; 
?>

find('abc[xyz]') - in this you define the element you want in place of abc and xyz is the attribute you want to access

7.Getting some element with some attribute with some value

PHP Code:
<?php
include('simple_html_dom.php');
$html = file_get_html('http://yoururlhere');
foreach($html->find('abc[xyz=pqr]') as $element)
echo $element; 
?>

All remains same but instead of just the attribute we write attribute =value . Here pqr is any attribute value

Similarly you may see this table for usage [from official website]
[Image: i92CD.jpg]

This is all for this tutorial.If you need anything more to be explained just tell me..

All reviews welcomed(although positive will be more appreciated)

Note: Have been posted by me on HF before.SO don't tell me that it i should have mentioned the source

RE: PHP HTML DOM Parser - The Real Slim Shady - 01-26-2013

sorry im on my phone so i cant look at the php file... but what is stopping it from returning every single 'a' in the webpage. not just the html tags?

looks like a very useful script though. ill download it later as im sure i can put it to good use in the future

RE: PHP HTML DOM Parser - hackarchives - 01-26-2013

It's not my script.It's by someone else.I just wrote a tutorial on it's usage.
The reason it does not select all 'a' is because of regex

RE: PHP HTML DOM Parser - bluedog.tar.gz - 01-26-2013

Well detailed tutorial, thanks

RE: PHP HTML DOM Parser - The Real Slim Shady - 01-26-2013

(01-26-2013, 11:46 AM)hackarchives Wrote: It's not my script.It's by someone else.I just wrote a tutorial on it's usage.
The reason it does not select all 'a' is because of regex

Ah okay. Still useful. Just got back home so ill take a closer look at the script shortly. Thanks for the share.

RE: PHP HTML DOM Parser - hackarchives - 01-26-2013

Glad you liked it guys.I have scraped many sites with the use of this DOM Parser

RE: PHP HTML DOM Parser - The Alchemist - 07-10-2013

I'm thinking of using this on a site that contains a collection of SMSes to get myself a huge collection of SMSes for building a Windows Phone app.

RE: PHP HTML DOM Parser - hackarchives - 07-10-2013

(07-10-2013, 06:04 AM)The Alchemist Wrote: I'm thinking of using this on a site that contains a collection of SMSes to get myself a huge collection of SMSes for building a Windows Phone app.

Yes it can be used.If you need help , you can ask me XD

RE: PHP HTML DOM Parser - VipVince - 07-10-2013

Just like its friend file_get_contents(), useful when right clicking and other procedures to stop viewing source are blocked.