Credit Card Numbers (REGEXP only):

Visa:

4[0-9]{3}\s[0-9]{4}\s[0-9]{4}\s[0-9]{4}

MasterCard:

5[0-9]{3}\s[0-9]{4}\s[0-9]{4}\s[0-9]{4}

American Express:

37[0-9]{2}\s[0-9]{4}\s[0-9]{4}\s[0-9]{4}

Discover:

6011\s[0-9]{4}\s[0-9]{4}\s[0-9]{4}

Matches (Visa): 4123 6453 2222 1746

Non-Matches (Visa):

3124 5675 4400 4567, 4123-6453-2222-1746

Similarly, MasterCard matches a set of 16 numbers, starting with 5, with a space between each subset of four numbers. American Express and Discover are the same, but must start with 37 and 6011 respectively.

Dates (REGEXP and SIMILAR TO):

([0-2][0-9]|30|31)/(0[1-9]|1[0-2])/[0-9]{4}

Matches: 31/04/1999, 15/12/4567

Non-Matches: 31/4/1999, 31/4/99, 1999/04/19, 42/67/25456

Windows absolute paths (REGEXP only):

([A-Za-z]:|\\)\\[[:alnum:][:whitespace:]!"#$%&'()+,-.\\;=@\[\]^_`{}~.]*

Matches: \\server\share\file

Non-Matches: \directory\directory2, /directory2

Email Addresses (REGEXP only):

[[:word:]\-.]+@[[:word:]\-.]+\.[[:alpha:]]{2,3}

Matches: abc.123@def456.com, _123@abc.ca

Non-Matches: abc@dummy, ab*cd@efg.hijkl

Email Addresses (REGEXP only):

.+@.+\..+

Matches: *@qrstuv@wxyz.12345.com, __1234^%@@abc.def.ghijkl

Non-Matches: abc.123.*&ca, ^%abcdefg123

HTML Hexadecimal Color Codes (REGEXP and SIMILAR TO):

[A-F0-9]{6}

Matches: AB1234, CCCCCC, 12AF3B

Non-Matches: 123G45, 12-44-CC

HTML Hexadecimal Color Codes (REGEXP only):

[A-F0-9]{2}\s[A-F0-9]{2}\s[A-F0-9]{2}

Matches: AB 11 00, CC 12 D3

Non-Matches: SS AB CD, AA BB CC DD, 1223AB

IP Addresses (REGEXP only):

((2(5[0-5]|[0-4][0-9])|1([0-9][0-9])|([1-9][0-9])|[0-9])\.){3}(2(5[0-5]|[0-4][0-9])|1([0-9][0-9])|([1-9][0-9])|[0-9])

Matches: 10.25.101.216

Non-Matches: 0.0.0, 256.89.457.02

Java Comments (REGEXP only):

/\*.*\*/|//[^\n]*

Matches Java comments that are between /* and */, or one line comments prefaced by //.

Non-Matches: a=1

Money (REGEXP only):

(\+|-)?\$[0-9]*\.[0-9]{2}

Matches: $1.00, -$97.65

Non-Matches: $1, 1.00$, $-75.17

Positive, negative numbers, and decimal values (REGEXP only):

(\+|-)?[0-9]+(\.[0-9]+)?

Matches: +41, -412, 2, 7968412, 41, +41.1, -3.141592653

Non-Matches: ++41, 41.1.19, -+97.14

Passwords (REGEXP and SIMILAR TO):

[[:alnum:]]{4,10}

Matches: abcd, 1234, A1b2C3d4, 1a2B3

Non-Matches: abc, *ab12, abcdefghijkl

Passwords (REGEXP only):

[a-zA-Z]\w{3,7}

Matches: AB_cd, A1_b2c3, a123_

Non-Matches: *&^g, abc, 1bcd

Phone Numbers (REGEXP and SIMILAR TO):

([2-9][0-9]{2}-[2-9][0-9]{2}-[0-9]{4})|([2-9][0-9]{2}\s[2-9][0-9]{2}\s[0-9]{4})

Matches: 519-883-6898, 519 888 6898

Non-Matches: 888 6898, 5198886898, 519 883-6898

Sentences (REGEXP only):

[A-Z0-9].*(\.|\?|!)

Matches: Hello, how are you?

Non-Matches: i am fine

Sentences (REGEXP only):

[[:upper:]0-9].*[.?!]

Matches: Hello, how are you?

Non-Matches: i am fine

Social Security Numbers (REGEXP and SIMILAR TO):

[0-9]{3}-[0-9]{2}-[0-9]{4}

Matches: 123-45-6789

Non-Matches:123 45 6789, 123456789, 1234-56-7891

URLs (REGEXP only):

(http://)?www\.[a-zA-Z0-9]+\.[a-zA-Z]{2,3}

Matches: http://www.sample.com, www.sample.com

Non-Matches: http://sample.com, http://www.sample.comm