RegExLib.com - The first Regular Expression Library on the Web!

Title	Test Details Pattern Title
Expression	^http://([a-zA-Z0-9_\-]+)([\.][a-zA-Z0-9_\-]+)+([/][a-zA-Z0-9\~\(\)_\-]*)+([\.][a-zA-Z0-9\(\)_\-]+)*$
Description	A very crude url pattern.
Matches	http://www.jonas.no/~webs(i)der/jon_as.php | http://www.yahoo.com/net//ore
Non-Matches	http://www./no/good | imap://www.com/
Author	Rating: Not yet rated. Martin Matusiak

Title	Test Details Pattern Title
Expression	(^[a-zA-Z0-9]+://)
Description	Use in a .net Regex.Split() to pull the protocol out of a url into the first array entry.
Matches	myprot://server/path.asp
Non-Matches	server/path.asp
Author	Rating: Not yet rated. blake wolf

Title	Test Details Pattern Title
Expression	^(http|https|ftp)\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&%\$#\=~])*[^\.\,\)\(\s]$
Description	This Regex (can be used e.g. in PHP with eregi) will match any valid URL. Unlike the other exapmles here, it will NOT match a valid URL ending with a dot or bracket. This is important if you use this regex to find and "activate" Links in an Text
Matches	https://www.restrictd.com/~myhome/
Non-Matches	http://www.krumedia.com. | (http://www.krumedia.com) | http://www.krumedia.com,
Author	Rating: Not yet rated. Michael Krutwig

Title	Test Details Pattern Title
Expression	([a-zA-Z]:(\\w+)*\\[a-zA-Z0_9]+)?.xls
Description	This RegEx will help to validate a physical file path with a specific file extension (here xls)
Matches	E:\DyAGT\SD01A_specV2.xls
Non-Matches	E:\DyAGT\SD01A_specV2.txt
Author	Rating: Not yet rated. vinod kumar

Title	Test Details Pattern Title
Expression	^(?=[^&])(?:(?<scheme>[^:/?#]+):)?(?://(?<authority>[^/?#]*))?(?<path>[^?#]*)(?:\?(?<query>[^#]*))?(?:#(?<fragment>.*))?
Description	Use it for breaking-down a URI (URL, URN) reference into its main components: Scheme, Authority, Path, Query and Fragment. This is not a simple match regular expression. so it not works to verify a URI. It returns 1 matching group for each URI component. For example, for the following URI: http://regexlib.com/REDetails.aspx?regexp_id=x#Details returns: scheme=&quot;http&quot;, authority=&quot;regexlib.com&quot;, path=&quot;/REDetails.aspx&quot;, query=&quot;regexp_id=x&quot; and fragment=&quot;Details&quot;. This is a W3C raccomandation (RFC 2396).
Matches	http://regexlib.com/REDetails.aspx?regexp_id=x#Details
Non-Matches	&
Author	Rating: Not yet rated. Frederico Knabben

Title	Test Details Pattern Title
Expression	^([a-zA-Z]\:|\\)\\([^\\]+\\)*[^\/:*?"<>|]+\.htm(l)?$
Description	Validates a file path on your local drive or a network drive. A similar one was written by Vinod Kumar but it does not reject asterisks in the path. Moreover, his did not work with RegularExpressionValidators. This one does.
Matches	x:\test\testing.htm | x:\test\test#$ ing.html | \\test\testing.html
Non-Matches	x:\test\test/ing.htm | x:\test\test*.htm | \\test?&lt;.htm
Author	Rating: Not yet rated. asdf asdfa

Title	Test Details Pattern Title
Expression	\[link="(?<link>((.|\n)*?))"\](?<text>((.|\n)*?))\[\/link\]
Description	This can be used in conjunction with the replace method to provide pseudo-code support without having to enable HTML. The replacement string (in ASP.NET, use RegExp.Replace(SourceString, RegularExpressionPattern, ReplacementString) is &lt;a href=&quot;${link}&quot;&gt;${text}&lt;/a&gt;.
Matches	[link="http://www.yahoo.com"]Yahoo[/link]
Non-Matches	[link]http://www.yahoo.com[/link] | [link=http://www.yahoo.com]Yahoo[/link]
Author	Rating: Not yet rated. Ryan S

Title	Test Details Pattern Title
Expression	^[a-zA-Z0-9\-\.]+\.(com|org|net|mil|edu|COM|ORG|NET|MIL|EDU)$
Description	Domain names: This regular expression tests the validity of a domain or hostname. It will match any valid domain name that does not contain characters which are invalid in URLs, and which ends in .com, .org, .net, .mil, or .edu. You can add additional valid TLDs by appending the | (pipe) character and the desired TLD to the list in the parens.
Matches	3SquareBand.com | asp.net | army.mil
Non-Matches	$SquareBand.com | asp/dot.net | army.military
Author	Rating: Not yet rated. G. Andrew Duthie

Title	Test Details Pattern Title
Expression	\.com/(\d+)$
Description	This is a regex I wrote to capture requests to AspAlliance.com with an article id as the only thing after the domain. So http://aspalliance.com/123 would go to article number 123. It maps the URL to the actual aspx file that displays the article based on the ID.
Matches	http://aspalliance.com/123 | www.aspalliance.com/123 | http://aspalliance.com/34
Non-Matches	http://aspalliance.com/article.aspx?id=123 | http://aspalliance.com/ | http://aspalliance.com/articl
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^(http|https|ftp)\://([a-zA-Z0-9\.\-]+(\:[a-zA-Z0-9\.&%\$\-]+)*@)?((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|([a-zA-Z0-9\-]+\.)*[a-zA-Z0-9\-]+\.[a-zA-Z]{2,4})(\:[0-9]+)?(/[^/][a-zA-Z0-9\.\,\?\'\\/\+&%\$#\=~_\-@]*)*$
Description	None of the other URL regex's seemed to work right for me, so i threw this together. works well with PHP's ereg().
Matches	http://www.sysrage.net | https://64.81.85.161/site/file.php?cow=moo's | ftp://user:[email protected]:123
Non-Matches	sysrage.net
Author	Rating: Not yet rated. Brian Bothwell

Title	Test Details Pattern Title
Expression	^DOMAIN\\\w+$
Description	In response to a question on the regex list at www.aspadvice.com, this expression should ensure that a login field's username includes a 'DOMAIN\' prefix. The latter part of the expression should probably be limited so that it only allows usernames of appropriate lengths, perhaps 3 to 20 characters (by replacing + with {3,20} for instance).
Matches	DOMAIN\ssmith | DOMAIN\a | DOMAIN\username
Non-Matches	ssmith | username | DOMAIN\
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	.*?$(?<!\.aspx)
Description	Matches a string to ensure that it does not end with .aspx; sure, you'd probably use string handling to do something this simple but, in the real world you'd whack a regex which validates a valid url to the front of this. The pattern was created by Wayne King; you can read about it here: http://scottwater.com/blog/posts/10204.aspx
Matches	http://weblogs.asp.net/DNeimke/blah.gif
Non-Matches	http://weblogs.asp.net/DNeimke/Default.aspx
Author	Rating: Not yet rated. Darren Neimke

Title	Test Details Pattern Title
Expression	[a-zA-Z]{3,}://[a-zA-Z0-9\.]+/*[a-zA-Z0-9/\\%_.]*\?*[a-zA-Z0-9/\\%_.=&]*
Description	A simple url search pattern that works against the most generic cases. A little better in terms of matches than the other URL expressions listed.
Matches	http://someserver | http://www.someserver.com/ | http://www.someserver.com/somefile.txt
Non-Matches	Thin | Lizzy
Author	Rating: Not yet rated. Gerrard Lindsay

Title	Test Details UK Domain Names with Protocol and Port
Expression	^(ht|f)tp((?<=http)s)?://((?<=http://)www|(?<=https://)www|(?<=ftp://)ftp)\.(([a-z][0-9])|([0-9][a-z])|([a-z0-9][a-z0-9\-]{1,2}[a-z0-9])|([a-z0-9][a-z0-9\-](([a-z0-9\-][a-z0-9])|([a-z0-9][a-z0-9\-]))[a-z0-9\-]*[a-z0-9]))\.(co|me|org|ltd|plc|net|sch|ac|mod|nhs|police|gov)\.uk(:\d+)?\/?$
Description	UK http/https/ftp URI. Based on my previous expression, this one takes an optional port number and optional trailing slash.
Matches	http://www.zeropanic.co.uk/ | http://www.zeropanic.co.uk:81/ | http://www.zeropanic.co.uk:81
Non-Matches	http://www.zeropanic.com:81/
Author	Rating: Not yet rated. Amos Hurd

Title	Test Details Pattern Title
Expression	wsrp_rewrite\?(?<wsrp_uri>[\w%:&\\/;.]*)/wsrp_rewrite
Description	Matches a string used to rewrite urls under the WSRP specification. It captures the URL-Encoded string that represents a url. Url validation is not provided.
Matches	wsrp_rewrite?http%3a%2f%2fregexplib.com%3fid%3d1%26message%3dtest/wsrp_rewrite | wsrp_rewrite?http:/
Non-Matches	http%3a%2f%2fregexplib.com%3fid%3d1%26message%3dtest | http://www.regexplib.com/Add.aspx
Author	Rating: Not yet rated. Andres Garcia

Title	Test Details UK Domain Names with Protocol
Expression	^(ht|f)tp((?<=http)s)?://((?<=http://)www|(?<=https://)www|(?<=ftp://)ftp)\.(([a-z][0-9])|([0-9][a-z])|([a-z0-9][a-z0-9\-]{1,2}[a-z0-9])|([a-z0-9][a-z0-9\-](([a-z0-9\-][a-z0-9])|([a-z0-9][a-z0-9\-]))[a-z0-9\-]*[a-z0-9]))\.(co|me|org|ltd|plc|net|sch|ac|mod|nhs|police|gov)\.uk$
Description	UK domains with protocol for http/https/ftp. Based on my previous expression, this allows the subdomain &quot;www&quot; for the http/https protocols, or &quot;ftp&quot; for the ftp protocol only.
Matches	http://www.zeropanic.co.uk | ftp://ftp.sunsite.ac.uk | https://www.z2.co.uk
Non-Matches	gopher://www.z2.co.uk | http://ftp.z2.co.uk | ftp://www.z2.co.uk
Author	Rating: Not yet rated. Amos Hurd

Title	Test Details Pattern Title
Expression	^([a-zA-Z].*|[1-9].*)\.(((j|J)(p|P)(g|G))|((g|G)(i|I)(f|F)))$
Description	Regular expression to limit types of files accepted. This example matches .jpg and .gif files only.
Matches	filename.jpg | FileName.JPG | filename.gif
Non-Matches	filename.png | filename.xxx | filename.bmp
Author	Rating: Not yet rated. Ramon Hildreth

Title	Test Details Pattern Title
Expression	^((\d|\d\d|[0-1]\d\d|2[0-4]\d|25[0-5])\.(\d|\d\d|[0-1]\d\d|2[0-4]\d|25[0-5])\.(\d|\d\d|[0-1]\d\d|2[0-4]\d|25[0-5])\.(\d|\d\d|[0-1]\d\d|2[0-4]\d|25[0-5]))$
Description	Matches valids TCP/IP-Adresses
Matches	1.198.0.1 | 100.10.0.1 | 200.200.123.123
Non-Matches	..12.23 | a.23.345 | 400.500.300.300
Author	Rating: Not yet rated. Karsten Sosna

Title	Test Details Pattern Title
Expression	^[a-z]+([a-z0-9-]*[a-z0-9]+)?(\.([a-z]+([a-z0-9-]*[a-z0-9]+)?)+)*$
Description	A simple regex which should validate a domain name according to RFC 1035 updated to match domain names with hyphens
Matches	www.domain.com | w123.d42omain.c43om | ww-w.d-omain.com
Non-Matches	1www.domain.com | www.1domain.com | www.domain.com-
Author	Rating: Not yet rated. Tinus Norstved

Title	Test Details Pattern Title
Expression	href\s*=\s*(?:(?:\"(?<url>[^\"]*)\")|(?<url>[^\s*] ))>(?<title>[^<]+)</\w>
Description	finds the url and url description for all links in a given text.
Matches	<td bgcolor="#ffffff" class="small"> <A HREF=" http://
Non-Matches	<td bgcolor="#ffffff" class="small"> <A HREF http://www.thepla
Author	Rating: Not yet rated. Matt Bruce