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Expression validating a Binary string of any length

A simple expression to brazilian phone number code, with international code. Simple DDI without "+" 99 plus simple DDD (99) plus simple local phone number 3 or 4 digits plus "-" plus 4 digits.

Major credit card validator. Only checks that the format is 16 digits (optionally separated by hyphens), not the value of any of the digits.

Most Concise RegExp for matching Decimal IPs. If nothing else, it'll make your code easier to read. (And I know that \d?\d is \d{1,2} but that's 2 extra characters.) --Update: darkone noticed 8 characters could be shaved down. I've edited it to reflect this. Thanks, darkone!

Use this along with this replacement string <img\1 /> to convert image tags to XHTML compliant image tags.

Check italian fiscal code (codice fiscale) with "OMOCODIA" control

Matches the registered trademark (®). Pretty simple, yet I dont think existed on RegExLib before.

Litle regexp for my portal engie. Only cut the {CHBLOCK:'modulename'} item

regex to validate unix device names (linux). useful for scripts using ifconfig or stuff

Expression validating a octal string of any length.

It validates Indian Vehicle Registration Number

Can be used to remove <SCRIPT language="JavaScript"> <!-- //--> </SCRIPT> from embeded javascript Should be used as case insensitive

Is used to evaluating domain names, none of the extras such as paths or protocols.

UK Phone Number Allows leading and trailing spaces and optional spaces after the dialing code. Initially the expression I posted was \s*0\d{4}\s*\d{6}\s*|\s*0\d{3}\s*\d{7}\s* But this didn't include optional brackets e.g. (01603) 123123 or phone numbers in a London format e.g. 0208 123 1234

easy when you want to allow your users to post images, but in a controlled way. I used it like this (in php): $text = preg_replace("/(\[IMG\])(\S+?)(\[\/IMG\])/is", "<a href=\"\\2\" target=\"_blank\"><IMG SRC=\"\\2\" align=\"center\" height=\"100\" border=\"0\"></a>",$text); so whenever they use [img]http://www.foo.com/bleh.jpg[/img] it will be converted to <a href="http://www.foo.com/bleh.jpg" target="_blank"><IMG SRC="http://www.foo.com/bleh.jpg" align="center" height="100" border="0"></a> so you get a 100 pixels high picture, and when they click on it it opens in a new window... (to prevent users from posting huge pictures and stuff)

Password matching expression. Password must be at least 4 characters, no more than 8 characters, and must include at least one upper case letter, one lower case letter, and one numeric digit.

Match the full names of the four main characters of The Flintstones.

This RegEx requires a US phone number WITH area code. It is written to all users to enter whatever delimiters they want or no delimiters at all (i.e. 111-222-3333, or 111.222.3333, or (111) 222-3333, or 1112223333, etc...).

Matches the ™ symbol. Pretty simple, yet I dont think existed on RegExLib before.

Specifier Format of Guid Values that this RegEx supports: 32 digits: [xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx] 32 digits separated by hyphens: [xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx] 32 digits separated by hyphens, enclosed in brackets: [{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}] 32 digits separated by hyphens, enclosed in parentheses: [(xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx)]