Regular Expressions 101

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Community Patterns

2

Quiz_14_Spam_filter

PCRE2 (PHP >=7.3)
Match a string that contains any of the following substrings: http://, www., porn, or credit card. But don't match the text if it contains one of: not allowed, filter, or mirc. Don't use word boundaries (anywhere in the text is fine). If you need help, try reading this.
Submitted by anonymous - a month ago
2

Quiz_13_Match_Alternating_0s_And_1s_In_Any_Order

PCRE2 (PHP >=7.3)
I'm trying to match bit sequences which are alternating between 1 and 0 and never have more than one 1 or 0 in a row. They can be single digits. Try matching this: 0101010, 1010101010 or 1
Submitted by anonymous - a month ago
2

Quiz_12_Match_Any_Number_Between_0-100

PCRE2 (PHP >=7.3)
Could you help me validate my input and only match positive integers between the range of 0 and 100? There can be several numbers in a string which I would want to retrieve. Try out these example strings: ...
Submitted by anonymous - a month ago
1

Regular expression to remove all puncutation

Python
Removes all of the puncutation present inlcuding \n,\t,\r
Submitted by Abhinav Gupta - 10 years ago
2

Date validator for mm/dd/yy

ECMAScript (JavaScript)
no description available
Submitted by Dheeraj Khushalani - dotnetguy.net - 10 years ago
2

Positive Numbers greater than 0 with leading zeroes.

ECMAScript (JavaScript)
Accepts all positive numbers above 0. Accepts numbers with leading zeroes e.g.: 0123, 00123.
Submitted by Sandeep Ranka - 10 years ago
2

UK phone number

PCRE (PHP <7.3)
UK phone number
Submitted by Andrea SonnY - 9 years ago
2

42 post regex

PCRE (PHP <7.3)
Hosts regex for 42 school (france)
Submitted by Kerosene2000 - 11 years ago
2

price float pattern

ECMAScript (JavaScript)
Checks that value is float format and has two digits at max
Submitted by @jprajani - 10 years ago
2

Regex tutorial Case sensitive consonants

PCRE (PHP <7.3)
With regex you can count the number of matches. Can you make it return the number of uppercase consonants (B,C,D,F,..,X,Y,Z) in a given string? E.g.: it should return 3 with the text ABcDeFO!. Note: Only ASCII. We consider Y to be a consonant! Example: the regex /./g will return 3 when run against t...
Submitted by anonymous - 4 years ago
2

sample

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 11 years ago
2

trim string

ECMAScript (JavaScript)
trim leading and trailing whitespace from a string
Submitted by Dave Atchley - 10 years ago
2

named group sample

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
2

postgesql

Python
no description available
Submitted by anonymous - 9 years ago
2

string contains

PCRE (PHP <7.3)
no description available
Submitted by mgaus - 9 years ago
1

IPv4&IPv6 URL validation regular expression

PCRE (PHP <7.3)
no description available
Submitted by Henry Li - 11 years ago
2

US and Canada Regex

ECMAScript (JavaScript)
A zipcode regex for validation of both US and Canada
Submitted by Kyle M. - 11 years ago
2

Unicode url sanitising

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
2

Url with <a> (param) validation

PCRE (PHP <7.3)
https://www.google.com http://www.google.net/hello https://www.google. http://www.google./hello above url matching with given regex...
Submitted by Duleep Dissanayaka - 11 years ago
2

Password Enforcement Pattern -- trailing pattern

PCRE (PHP <7.3)
This RegEx was posted on a Ruby site as one for enforcing password pattern. I added {8,32} to limit the length of the password, even though I realize no one has passwords longer than that. Rules: at least 1 digit, 1 special character (as defined), 1 upper case and 1 lower case character, between 8 ...
Submitted by Dave Phillips - 10 years ago
1...3738394041...900

Community Library Entry

2

Regular Expression
PCRE (PHP <7.3)

/
[^ -AEIOU[-ÿ]
/
g
Open regex in editor

Description

With regex you can count the number of matches. Can you make it return the number of uppercase consonants (B,C,D,F,..,X,Y,Z) in a given string? E.g.: it should return 3 with the text ABcDeFO!. Note: Only ASCII. We consider Y to be a consonant! Example: the regex /./g will return 3 when run against the string abc.

Submitted by anonymous - 4 years ago