Hey guys,

I've been stuck on this for a while. I'm trying to make a few different PHP scripts to accomplish similar things. For the first one, I wanted to be able to take in a URL and extract a small piece of data from it. For example:

http://www.somewebsite.com/123456_1234567890123_1234567890_12345678_1234567_n.jpg

From this, I want to extract the "12345678" portion of this URL. It will always be the third to last fragment (separated by _) from the file extension. The fragments can be any length, the last one always being an "n". I have no idea where to start for this task.

For my second task, I'm trying to rip all the image tags out of some source code. I don't want to include the images if the source URL is from a specific website. I have some code working that rips all of the image tags from a site, but can't figure out how to make it not include ones from the "banned" site. Here's what I have:

PHP Code:

<?php 

$url = "example.com"; 

$text = file_get_contents($url); 

preg_match_all("/<img[^>]+\>/i", $text, $match); 
print_r($match);

?>

So say I had a site called banned.com and didn't want to include in my search any image tags like <img src="banned.com/blahblah.jpg" />. Would RegExp's be the best choice for this? I've heard somewhere that it's not good for omitting search results.

Thanks in advance and happy holidays.

Whenever I have to parse html or xml I try as much as I can to avoid using regular expressions. I think using DOM is much more reliable:
http://php.net/manual/en/book.dom.php

PHP Code:

$dom = new DOMDocument();
$dom->loadHTML($url);

foreach($dom->getElementsByTagName('img') as $image)
{
     if($image->hasAttributes())
     {
          if(strpos($image->getAttribute('src'), 'bannedsite.com') !== false)
               $image->setAttribute('src', '');
     }
} 


Interesting, I'll look into this and report back. Thanks!

I just tried the following to see if any images would print out and got a bunch of errors instead:

PHP Code:

<?php 

$url = "http://www.example.com"; 
$text = file_get_contents($url); 
$dom = new DOMDocument();
$dom->loadHTML($text);
$pageimages = $dom->getElementsByTagName('img');
foreach($pageimages as $image){
    echo $image->nodeValue;
}

?>

Some errors I got were things like:

Warning: DOMDocument::loadHTML() [domdocument.loadhtml]: ID post598834833 already defined in Entity, line: 1247 in /home/<id>/public_html/imagegrab.php on line 16

which is referring to:

PHP Code:

$dom->loadHTML($text); 


Any ideas? On a side note, it's tough to write OOP without an IDE. Does anybody know of a free PHP IDE that has autocomplete, etc like Eclipse? I'm used to Eclipse for Java which is really nice, and wasn't sure of the functionality of their PHP plugin or w/e.