Regular Expression Help

Hello

I'd like to know how can I do this:

For example I have a string "I like <h1>digitalpoint</h1> forum because digitalpoint forum is good.". And I want to replace "digitalpoint forum" to "this forum". How can I do it by preg_replace function for replacing both "digitalpoint forum" ignoring html tags.

Thank you

 

Hi, you don't need regular expression, here is my solution:

$s="I like <h1>digitalpoint</h1> forum because digitalpoint forum is good.";
echo str_ireplace('digitalpoint forum','this forum',strip_tags($s))."\r\n";

PHP:

Regards

Edit:OK, here is regex

echo preg_replace('#\bdigitalpoint\s+forum\b#miu','this forum',strip_tags($s))."\r\n";

PHP:

 

Thanks for your reply koko5, but I need that the function returns "I like <h1>this</h1> forum because this forum is good." not "I like this forum because this forum is good.". And I want to do it by regular expression because I need replace the string like this: '/\bdigitalpoint forum\b(?![^<]*>)/i'

 

ok,maybe this:

echo preg_replace('#(\bdigitalpoint)(\</[^\>]+\>)?(\s|&nbsp;)+(forum\b)#miu','this$2$3$4',$s)."\r\n";

PHP:

 

Thank you koko5, it works. But how can I do that it replaces the "digitalpoint" to "this" if "digitalpoint" is in several tags like this: <h1><u><i>digitalpoint</i></u></h1>.

Thank you very very much again!!!

 

You are welcome, I'm glad to help if I can
Replacing (\</[^\>]+\>)? to (\</[^\>]+\>)* will do the trick:

echo preg_replace('#(\bdigitalpoint)(\</[^\>]+\>)*(\s|&nbsp;)+(forum\b)#miu','this$2$3$4',$s)."\n";

PHP:

Regards

 

I am sorry, but it doesn't do it.

 

Sorry, finally I've fixed it (hope so) :

echo preg_replace('#(\bdigitalpoint)((\</[^\>]+\>)*(\s|&nbsp;)+forum\b)#miu','this$2',$s)."\n";

PHP:

 

It works perfectly!!! Thank you very much koko5!!!