need a little help

[dezkit]

Hey guys I'm trying to do so that it checks if a string has something like

 

http://steamcommunity.com/id/XXXXXXX

http://steamcommunity.com/profiles/YYYYYYYYYY

 

where X can equal numbers and letters

and where Y can equal a numbers

 

I currently have

if(preg_match("/^http://steamcommunity.com/id/[a-zA-Z0-9]/",$str)){
echo "match found 3";
}

But it doesn't work gives me error

Warning: preg_match() [function.preg-match]: Unknown modifier '/' in C:\xampp\htdocs\steamid.php on line 13

[cags]

If you are going to be checking against paths of any kind I would highly recommend not using a forward slash as your delimiter as otherwise you will need to escape every instances of it in your pattern. You also need to escape the . in your pattern. I'd also guess that since you say X can equal 'numbers and letters' i.e. plurals, that you need a quantifier to make the capture group match more than one character.

 

if(preg_match("~^http://steamcommunity\.com/id/[a-zA-Z0-9]+~",$str)){
echo "match found 3";
}

[ZachMEdwards]

if(preg_match('%http://steamcommunity\.com/(?:id|profiles)/\w+%m',$str)){
echo "match found 3";
}

That's how I'd do it.