php regEx

im a novice in php regEx...plz help me

preg_match will return true if given link is like these:

http://www.mydomain.com/path/file.php?dataid=[B]x92DFt[/B]_maradonna-hand_of_god-gallery&hr=1
www.mydomain.com/path/file.php?dataid=[B]x92DFt[/B]_maradonna-hand_of_god-gallery&hr=1
mydomain.com/path/file.php?dataid=[B]x92DFt[/B]_maradonna-hand_of_god-gallery&hr=1

Code (markup):

well i mean it will not care if http://www there or not
2nd-> it will retrieve the id which is mixed with data name but they r separated by an underscore ( _ ) but plz notice, there cud be underscore inside the data name.
another important thing is, id's length is unknown but it never contain sign but only A-Z a-z 0-9

for example: x92DFt_maradonna-hand_of_god-gallery
highlighted one is id & its separated by an underscore although there r underscore in the data name (maradonna-hand_of_god-gallery)

help me plz

 

Test the regex here.

 

Instead of using regex, how about split it into array like below(the code not been tested though):

And thanks unigogo for the link(that gonna help for the regex tester)

As for the pattern, I believe it should be something like "/(\w+)_/" but forgive me if Im wrong

 

how do u declare $ptn = "/x92DFt([\w_-]+)/"; id is variable...totally unknown
if its known why shud i retrieve it

& tnx for the link....not checked yet...will check it later

 

trying & trying
& failed

ok. can anyone plz give me a preg_match() code of this link, so i'll understand how it works

$url = 'http://www.dailymotion.com/video/xb3bcy_los-angeles-a-marijuana-smokers-hea_news';

$pattern = ???? // i need this

preg_match($pattern, $url, $match);

echo $match[1]; // it will return only: xb3bcy

PHP:

yes...i want it only retrieve xb3bcy from the link

 

just use the regex coach, it's excellent for training you.

assuming the string is always consistent you could use:

$pattern = 'http://www.dailymotion.com/video/(.*?)_';

PHP:

or if you know that the string you're looking for will always be 6 chars long (inc. digits) then

$pattern = 'http://www.dailymotion.com/video/(.{6})';

PHP:

and you don't even need the underscore (_) in that case!

 

tnx szalinski

 

just a quick question

[a-z0-9] means what?? Alphabetic & numeric only?? or it includes special sign like @#$%&*-_=+
if not what includes those sign & Alphabetic & numeric...i mean all