Turning keywords from text into links

[hallm]

I've got a script that I use to update pages on my website. I've got three variables that apply to my issue.

$keywords Keywords that I designate
$link Link where I want the visitors to go
$text The actual text thats displayed

What I'm wanting to do is somehow parse the text before it is echoed and make a like everytime the keywords are used, then display. Example below.

$keywords = 'chair';
$link = '

http://www.somewhere.com';

$text = 'This is sample text about a chair. A chair is';

When $text is echoed, I'm wanting the two instances of chair to be replaced with '<a href="

http://www.somewhere.com">chair</a>'

I'm not wanting anyone to write any code for me, I'm just stumped as to which functions to look at to achieve my goal.

Thanks for your help.

Marion

hallm

http://www.fatgenie.com

 

[DRJ478]

You can use PCRE (Perl Compatible egular Expressions) or simple str_replace() functions.

The challenge is not as easy as it sounds since there may be many complicating factors when inserting HTML markup into existing text.

If you just want to replace let's say all occurrences of the word 'chair' str_replace('chair','<a href="

http://whatever.com">chair</a>',$str)

in a plain text file you'll be fine.

However, if there are words that are part matches, let's make up a person named Schaira McKenzie the 'chair' part would also be replaced.
What if the word chair apperas within an HTML tag, like an image tag <img="chair.jpg"> ? A substitution would mess up the HTML.

PCRE are much more powerful but at first difficult to understand. Look at them, anyway.

 

[hallm]

Thanks, I'll give it a try.

Marion

hallm

http://www.fatgenie.com