Solved

php regex find everything (any character any white space any lline breaks) between div tags

Posted on 2008-10-20
8
771 Views
Last Modified: 2008-10-21
I'm pretty new to using regular expressions and through trial and error, I've been able to figure out pretty much everything except this:

How can I find everything? Every character, every whitespace, every line break?

For example I want to capture everything between to html tags: <div class="thisdiv"></div>

$pattern="/     ?    /";
$replacement="<div class=\"thatdiv\"><strong>thisdiv</strong> has been replace</div>";
include(preg_replace($pattern,$replacement,"testfile.html" ));

Thanks for any help figuring out my pattern.  The line breaks are \r\n
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>Untitled Document</title>

</head>
 

<body>

<div class="thisdiv">All the contents of this div need to be replaced <br />

<p>this paragraph---goners</p>

<div>this div dies too</div>

<table>

  <tr>

    <td>This</td>

    <td>table</td>

  </tr>

  <tr>

    <td>is</td>

    <td>dead</td>

  </tr>

</table>
 

</div>

</body>

</html>

Open in new window

0
Comment
Question by:dban00b
8 Comments
 
LVL 19

Expert Comment

by:BrianGEFF719
ID: 22764722
Hi,
Try this:

$pattern="/<div class=\"thisdiv\">(.*?)<\/div>/ix";

0
 
LVL 19

Expert Comment

by:BrianGEFF719
ID: 22764961
Also, that regex should be in single quotes, not double.
0
 
LVL 27

Expert Comment

by:ddrudik
ID: 22765777
Assuming no nested div's:
$pattern='#<div class="thisdiv">(.*?)</div>#is';

i = case-insensitive
s = . matches any character, including \n
0
 
LVL 23

Expert Comment

by:Tiggerito
ID: 22765814
Looks like the example has nested div's!

Unless you can add more rules you might find this a hard one to solve.

Would this div always be the outermost div of the file?
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 27

Accepted Solution

by:
ddrudik earned 500 total points
ID: 22765874
Assuming outer-most DIV with/without nested DIVs:
$pattern='#<div class="thisdiv">(.*)</div>#is';
0
 
LVL 27

Expert Comment

by:ddrudik
ID: 22767449
Thanks for the question and the points.
0
 
LVL 1

Author Comment

by:dban00b
ID: 22767510
The accepted one worked right away, just blindly copying the pattern into my source. I would like to know something extra through::

$pattern='#<div class="thisdiv">(.*?)</div>#is'; // stops at the nested </div>
$pattern='#<div class="thisdiv">(.*)</div>#is'; //stops at the last </div> in the file

I assume the hash marks are to avoid having to escape the "/" , but how does removing the "?"make the match skip the nested the div's?  And what does the 'x' tag do? Because the first answer:
$pattern='/<div class=\"thisdiv\">(.*?)<\/div>/ix'; //looks very similar, but returned an empty array
0
 
LVL 27

Expert Comment

by:ddrudik
ID: 22767543
here's a description of the different modifiers, s is required for your source since it contains \n:
http://us2.php.net/manual/en/reference.pcre.pattern.modifiers.php
here's a description of delimiters, I used # since / was in the pattern, although it works to escape / with \ within the pattern:
http://us2.php.net/manual/en/intro.pcre.php
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
php refresh button on the browser 2 36
mysql update statement effect only some rows 4 27
phpmailer in WHILE loop - weird results 10 29
Session timeout 5 15
Developers of all skill levels should learn to use current best practices when developing websites. However many developers, new and old, fall into the trap of using deprecated features because this is what so many tutorials and books tell them to u…
Build an array called $myWeek which will hold the array elements Today, Yesterday and then builds up the rest of the week by the name of the day going back 1 week.   (CODE) (CODE) Then you just need to pass your date to the function. If i…
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.

863 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now