Regular expressions....

Fatboy

Hi all.

Just wondering how I can use PHP to grab urls and the titles out of HTML source code.

For example, here is some HTML source from my page, very simple just to try some of this out on:

<center>
 
<img src='fb.gif' alt='Fatboy - The original lardarse'> 
<h4><a href="http://www.mako4css.com/Tutorial.htm">CSS</a> | <a href="bomber.mov">VW Bomber ad</a></h4>
</center>

I want the code to look through the source and present (either display to screen or to write to a file) in the following way:

Link name : Link ref

So for the above example, it would show:

CSS : http://www.mako4css.com/Tutorial.htm
VW Bomber ad : bomber.mov

I have had a look at preg match but couldn't fathom it out!

Many thanks for your time!

//edit: ok, just found preg_match_all so will look at that as well 😃

rehfeld

this pattern isnt perfect, but its close and should give you a start.

you need to learn regular expressions. read for an hour or 2 and youll be amazed at what you can do.
http://www.regular-expressions.info/tutorial.html
http://www.samuelfullman.com/team/php/tools/regular_expression_tester_p2.php
http://www.php.net/pcre
http://www.php.net/manual/en/reference.pcre.pattern.modifiers.php
http://www.php.net/manual/en/reference.pcre.pattern.syntax.php


$pattern = '#<a[^>]+href\s?=\s?("|\\')([^"|\\']+?)\\1[^>]*>(.*?)</a>#si';

preg_match_all($pattern, $subject, $matches);

print_r($matches);

Fatboy

Thank you very much!

I guess I best grab some coffee and read up on regular expressions - I have been warned that they are 'fun'

I will go fiddle - again, thanks you!

Shrike

Yikes backreferences n'all 🙂 What's wrong with a simple:

preg_match_all("/href=\\"(.*?)\\">(.*?)</si", $src, $match);

to capture all links from a page? Then there's the moral implications 😉

Fatboy

Originally posted by Shrike
Yikes backreferences n'all 🙂 What's wrong with a simple:
preg_match_all("/href=\\"(.*?)\\">(.*?)</si", $src, $match);
to capture all links from a page? Then there's the moral implications 😉 [/B]

LOL guess there are dodgy uses.

I am trying to do something for university and I want to do a google search for a certain topic, I then want to strip out the results google brings back so i can print out a sheet of page titles and links so i can browse whenever i need to without trying to remember the exact search terms i used before.

Only trouble is I cannot get it to work 🙁