Help with preg_match

[nadal]

Hi,
i need help with preg_match
i hawe links like
http://test.site.com/cat1/cat2/123.html
http://test.site.com/cat1/cat2/cat3/1.html
i need when i put on form this link and pres submit to get link to last / aded text page- get the numberof html page and change the .html in a .txt like:
http://test.site.com/cat1/cat2/page-123.txt
http://test.site.com/cat1/cat2/cat3/page-1.txt
Thanks
Sorry for bad english!!!

[langsor]

Hi

Regular expressions are tricky and can be very picky. If you have different input structures than the ones you provided, I cannot guarantee it to work with those other structures.

Hope it helps

<?php
// TEST SUBJECT STRINGS
$link1 = 'http://test.site.com/cat1/cat2/123.html';
$link2 = 'http://test.site.com/cat1/cat2/cat3/1.html';

// find this pattern
$pattern = '#^(.*/)(\d+)(\.html)$#';
// make these replacements
$replace = '\\1page-\\2.txt';

// regular expression preg_replace ...
print preg_replace( $pattern, $replace, $link1 );
print "\n<br>\n";
print preg_replace( $pattern, $replace, $link2 );

/** OUTPUT OF ABOVE TESTS
http://test.site.com/cat1/cat2/page-123.txt
http://test.site.com/cat1/cat2/cat3/page-1.txt
**/
?>