Replacing keywords in text with php & mysql

Posted by intacto on Stack Overflow See other posts from Stack Overflow or by intacto
Published on 2010-04-14T09:36:46Z Indexed on 2010/04/14 9:43 UTC
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Filed under:

php

|

mysql

|

preg-replace

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str-replace

Hello,

I have a news site containing an archive with more than 1 million news. I created a word definitions database with about 3000 entries, consisting of word-definition pairs.

What I want to do is adding a definition next to every occurence of these words in the news. I cant make a static change as I can add a new keyword everyday, so i can make it realtime or cached.

The question is, a str_replace or a preg_replace would be very slow for searching 3 thousand keywords in a text and replacing them.

Are there any fast alternatives?

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