Please help with REGEX - Dev Articles

Dev Articles Community Forums Sponsor:

July 15th, 2003, 05:37 PM

tylendel98

Registered User

Join Date: Jan 2003

Posts: 5

Time spent in forums: 59 m 52 sec
Reputation Power: 0

Please help with REGEX

Hello,

Could someone please assist me with a little regex issue?

The following code produces paging links in the form - page 1 etc
by putting [page] where I want it to break the text.

What I would like it to do is produce a list of page title links by doing this [page=something].

Thanks in advance

PHP Code:


		
			
<?php



function page_break($text) {



if (ereg("\[page]",$text))

{

     $pages = split("\[page]",$text);

     if (!$pages[0]) array_shift($pages);

     $x = count($pages);

     if(!$pagebreak) $pagebreak = 1;



     $text = $pages[$pagebreak-1];



     $page_nav = "<p>";

     if ($pagebreak != 1)

     {

         $prevpage = $pagebreak - 1;

         $page_nav .= "<a href=\"$PHP_SELF?pagebreak=$prevpage\"

title=\"Page $prevpage\"><< | </a> ";



     }

     for($i = 1; $i <= count($pages); $i++)

     {

         $page_nav .= "<a href=\"$PHP_SELF?pagebreak=$i\" title=\"Page

$i\">Page $i</a> | ";

     }

     if ($pagebreak < $x)

     {

         $nextpage = $pagebreak + 1;

         $page_nav .= "<a href=\"$PHP_SELF?pagebreak=$nextpage\"

title=\"Page $nextpage\">>></a> ";

     }

     $page_nav .= "</p>";

     $text .= $page_nav;

}



?>

July 16th, 2003, 05:36 PM

crazytrain81

Contributing User

Join Date: Aug 2002

Posts: 232

Time spent in forums: < 1 sec
Reputation Power: 7

If you're trying to match the literal string '[page]', you have to escape the brackets in your regex... ereg('\[page\]', $text)

July 16th, 2003, 09:16 PM

jpenn

Contributing User

Join Date: Oct 2002

Location: Washington, DC

Posts: 317

Time spent in forums: 2 m 3 sec
Reputation Power: 7

As the crazy one said - but also if you just need to match the [page] within the blob - don't even use the slow regex, use something like this:

PHP Code:


		
			
if ( stristr( $page_data, '[page]' ) )

{

        /* true - [page] found in blob */

}

else

{

        /* false - [page] not found in blob */

}

Now, you mentioned [page=something] in your post, but i don't see that in your code. If this is the case, you need to use something like this:

Code:

if ( preg_match( '/\[page=(.*?)\]/', $page_data, $match ) )
{
        /* Found - the page name is held in $match[1] */
}

This brings us to the next question - will there be mulitple pages on this - if so, you need preg_split() and a preg_match_all() combination and a little helping hand on getting the array() data out of the $match array in order of page sequence...

__________________
~ Joe Penn

We work for free to help make this a valuable resource on the internet. Do you appreciate the help - did we provide help that will help you prosper and help that has contributed to sharpening your current skill set?

Show your appreciation and purchase something from our Amazon Wishlist's - it's simple and a great way to say thank you.

Viewing: Dev Articles Community Forums > Programming > General Programming Help > Please help with REGEX

« Previous Thread | Next Thread »

Thread Tools	Search this Thread
Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts vB code is On Smilies are On [IMG] code is On HTML code is Off

View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox

Forum Jump