Hi, I'm having a little trouble with the preg_replace functon

Basically, i don't know where to start!

I want to replace something like this:

<script type="text/javascript" src="Y"></script>

with this

<script type="text/javascript" src="XY"></script>

Notice the added X before the Y link in src"".

Thanks in advance

You don't need the whole preg machinery to do this.

If you know exactly what must be changed to what, use str_replace
http://www.php.net/manual/en/function.str-replace.php

PHP Code:

$html='<script type="text/javascript" src="Y"></script>';
$html=str_replace('src="Y"', 'src="XY"', $html); 


Like tripy said, do it.

It can be done with preg_replace() this way:

PHP Code:

<?php
$string = '<script type="text/javascript" src="Y"></script>';
$string = preg_replace('/(.*?src=")(.*?)(".*)/','$1X$2$3',$string);
echo $string;
?>

I think that preg replace is the best way to go because i am betting that the Y part will not be the same every time ... and for str_replace the Y part must be the same every time

Originally Posted by solomongaby

I think that preg replace is the best way to go because i am betting that the Y part will not be the same every time ... and for str_replace the Y part must be the same every time

That is what I was thinking about.

My regex adds 'X' before the content between " and " after matched text 'src='.

I really should take some time to get past the basis with regexp, but this look sooooo obscure to me that I never had the courage to....
And always succedded in using more str_replace, and it really keeps more readable, I think.

Your regexp is great, but if someone asked me to debug it, I would be lost.
Espacially the "'$1X$2$3'" part.
A backreference, isn't it ?

Originally Posted by tripy

I really should take some time to get past the basis with regexp, but this look sooooo obscure to me that I never had the courage to....
And always succedded in using more str_replace, and it really keeps more readable, I think.

Your regexp is great, but if someone asked me to debug it, I would be lost.
Espacially the "'$1X$2$3'" part.
A backreference, isn't it ?

Yup I think. I don't know the terms, but I think you are right

$1 is the left part before Y, $3 is the right part after Y and $2 is the Y part or whatever you have placed for the letter Y.