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URL Regular Expression

 
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URL Regular Expression
skyhawk133
27 Feb, 2007 - 07:11 PM
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I'm having an issue with a regular expression. Here's what I've got:

$pattern = "/^.*" . $delimiter . "=([^&]+)&?.*\$/i";

This will take a referrer string that has search.php?a=1&b=whatever&q=what+you+searched+for&aq=t and break out just the $delimiter element. In this case the delimiter is "q" and I want whatever+you+searched+for. The problem is I'm getting "t" from the aq=t.

I would like it to only pull back ?q= or &q= but not sure how to add the ? and & in to the regex.





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Spider
RE: URL Regular Expression
27 Feb, 2007 - 07:58 PM
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to match either ?q= or &q=, you could use
(\?|&)q=
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snoj
RE: URL Regular Expression
27 Feb, 2007 - 08:49 PM
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I'm not sure why that expression is the way it is...but would this work? (\?|&)q=([^&]+)
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Spider
RE: URL Regular Expression
28 Feb, 2007 - 08:45 AM
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I pulled out a reference book for regex, and after a bit of fiddling I think this is what you want:
$pattern = '/(?:\?|&)'. $delimiter .'=([^&]+)/i';

then in theory (and it worked for all the values of $string that I tested)

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

should set $match[1] to what you want.

The ?: at the start is what prevents it from giving more stuff than you need (like you were getting the extra "t" from your original pattern.
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Xmod
RE: URL Regular Expression
28 Feb, 2007 - 02:02 PM
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This is from a code im workin on and it works. =) hopefully it will help

CODE

$url = "search.php?c=$c&s=$s&search_country=$_POST[search_country]&search_state=$_POST[search_state]&search_city=$_POST[search_city]&search_PropertyType=$_POST[search_PropertyType]&MinPrice=$min&MaxPrice=$max&rooms1=$rooms1&rooms2=$rooms2&bath1=$bath1&bath2=$bath2&AgentID=$agent&before=$before&school=$school&transit=$transit&park=$park&ocean_view=$ocean_view&lake_view=$lake_view&mountain_view=$mountain_view&ocean_waterfront=$ocean_waterfront&lake_waterfront=$lake_waterfront&river_waterfront=$river_waterfront";

    header("location:$url");
    exit();
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skyhawk133
RE: URL Regular Expression
28 Feb, 2007 - 02:30 PM
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That's not what I'm trying to do Xmod.


If you are logged out of dream.in.code and do a search on google for "C++ Sleep" and click the first result, you should see "C++ SLEEP" real big on the page you arrive at. It's taking what you searched for and displaying it on the page. The problem was with the reg ex I was using. I'm going to try Spiders and see if it works.
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