Solved

Regex to replace <[content]>

Posted on 2008-10-22
4
209 Views
Last Modified: 2008-10-22
I want to find this or any acceptable variation of it:

       <[content]>

And replace it with:

       xyz

This should be case insensitive and should allow ANYTHING between "content" and the brackets.

So all these should be replaced:

       <[content]>
       <[CONTENT]>
       <[*ContenT*]>
       <[ content  / ]>

This must be PHP4 compatible.
0
Comment
Question by:hankknight
  • 2
4 Comments
 
LVL 35

Expert Comment

by:Terry Woods
ID: 22780616
This will work in most cases:
$searchFor = "content";
$replaceWith = "xyz";
echo preg_replace( "#<\[.*?$searchFor.*?\]>#i",$replaceWith, $str);

Open in new window

0
 
LVL 82

Accepted Solution

by:
hielo earned 300 total points
ID: 22780619
try:
preg_replace('#<\[[^c]*(content)[^\]]*\]>#i','xyz',$str);

Open in new window

0
 
LVL 1

Expert Comment

by:cristides
ID: 22780629
this is one example for check if on if is valid or not.
ereg("([12]?[0-9]?[0-9].[12]?[0-9]?[0-9].[12]?[0-9]?[0-9].[12]?[0-9]?[0-9])", $dirty, $clean);

0
 
LVL 35

Assisted Solution

by:Terry Woods
Terry Woods earned 200 total points
ID: 22780751
One problem case with my code:

$searchFor = "content";
$replaceWith = "xyz";
$str = "Here is some <[*blah*]> and some content and some more <[*blah*]> and some <[234content!!]> for good measure";
echo "str before: $str<br>\n";
$str = preg_replace( "#<\[.*?$searchFor.*?\]>#i",$replaceWith, $str);
echo "str after: $str<br>\n";

Output:

str before: Here is some <[*blah*]> and some content and some more <[*blah*]> and some <[234content!!]> for good measure
str after: Here is some xyz and some xyz for good measure

A slight modification very similar to hielo's suggestion, will fix this case:

$searchFor = "content";
$replaceWith = "xyz";
$str = "Here is some <[*blah*]> and some content and some more <[*blah*]>";
echo "str before: $str<br>\n";
$str = preg_replace( '#<\[[^\]]*?'.$searchFor.'[^\]]*?\]>#i',$replaceWith, $str);
echo "str after: $str<br>\n";

which correctly outputs:

str before: Here is some <[*blah*]> and some content and some more <[*blah*]> and some <[234content!!]> for good measure
str after: Here is some <[*blah*]> and some content and some more <[*blah*]> and some xyz for good measure

But that still misses this case with an extra ] character:

$str = "Here is some <[*blah*]> and some content and some more <[*blah*]> and some <[234content! ] ]> for good measure";

Output is:

str before: Here is some <[*blah*]> and some content and some more <[*blah*]> and some <[234content! ] ]> for good measure
str after: Here is some <[*blah*]> and some content and some more <[*blah*]> and some <[234content! ] ]> for good measure

Is that going to be good enough for the job, or do you need that last case covered too?
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Test if unique ID is in log file 5 21
Ajax and PHP 9 29
JQuery Search Filter 2 29
Php logic to add to date card 9 19
I imagine that there are some, like me, who require a way of getting currency exchange rates for implementation in web project from time to time, so I thought I would share a solution that I have developed for this purpose. It turns out that Yaho…
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…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
The viewer will learn how to count occurrences of each item in an array.

856 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