Replace a number in a string for another number

[papaface]

Hey

 

I have a string that looks like the following:

top-php-tutorials-2.html

 

I have a script that cycles through each page. The 2 in the quote above is the page number.

 

How can I extract the number between the - and the .html and replace it with another number?

 

I've tried

substr($engine->selectedcaturl, 0,-6).$v.".html"

But then I realised this only works for numbers that are 1 digit long

 

Any input would be appreciated

[kenrbnsn]

You can use preg_replace.

 

Here's and example:

<?php
$fn = 'top-php-tutorials-2.html';
$pat = '/(\w+)-(\w+)-(\w+)-(\d+).(\w+)/i';
$v = '100';
$repl = '$1-$2-$3-' . $v . '.$4';
$nfn = preg_replace($pat,$repl,$fn);
echo $nfn;
?>

 

Ken

[papaface]

You can use preg_replace.

 

Here's and example:

<?php
$fn = 'top-php-tutorials-2.html';
$pat = '/(\w+)-(\w+)-(\w+)-(\d+).(\w+)/i';
$v = '100';
$repl = '$1-$2-$3-' . $v . '.$4';
$nfn = preg_replace($pat,$repl,$fn);
echo $nfn;
?>

 

Ken

Thanks for that Ken! Works perfectly. I really need to learn me some regex!