Need help with regular expression using "PREG_REPLACE"

[asyadiqin]

Hi all, sorry if someone have posted this solution elsewhere but I couldn't find any when i search the forum.

 

I need to be able to replace double slashes "//"  in a url string. Example as follows

 

http://www.mydomain.com/with//double//quotes/

to

http://www.mydomain.com/with/double/quotes/

 

I was told that this can be done using preg_replace, but the problem is to write a regular expression to ignore and not replace the double quotes in "http://". I am not very good with regular expression and have tried but failed miserably. I am not sure if this is the correct route to perform this task but any help is greatly appreciated.

 

Currently, as a workaround, I just explode the url string, replace the double quotes and add "http://" to the string, but I am curious to know if this can be done with just a single line of PHP code. Thanks.

 

 

 

 

[dsaba]

php isn't ti basic, where shorter lines of code yield more efficiency

rather if possible a non-regex solution is most likely better, but shorter lines are easier on the eyes

 

have tried but failed miserably

here's a nice tut:

http://www.phpfreaks.com/tutorials/52/0.php

search "regex lookaheads lookbehinds" in google

 

Pattern:

~(?<!http:)//~

 

Visualize it:

http://nancywalshee03.freehostia.com/regextester/regex_tester.php?seeSaved=mgup3cnz

 

Code it:

$url = 'http://www.mydomain.com/with//double//quotes/';
$url = preg_replace('~(?<!http:)//~', '', $url);
echo $url;

[asyadiqin]

Thanks for the help. It works great and make my code looks a bit more nicer. Anyway, thanks for the tutorial link. I will look into it to further understand more about regex.

 

Thanks again.