Regular Expressions 101

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Community Patterns

87

Password Validation

ECMAScript (JavaScript)
Checks that a password has a minimum of 6 characters, at least 1 uppercase letter, 1 lowercase letter, and 1 number with no spaces.
Submitted by Christian Klemp - 9 years ago
107

ECMAScript/JavaScript trim

ECMAScript (JavaScript)
Trim leading and trailing whitespace from a string.
Submitted by fp - 11 years ago (Last modified 3 months ago)
238

Matching email addresses per RFC5322

PCRE (PHP <7.3)
The BNF rules from RFC 5322 transformed to PCRE by Nikita Popov and described in the post http://nikic.github.io/2012/06/15/The-true-power-of-regular-expressions.html.
Submitted by Michael Musson - 11 years ago
483

regex101.com permalink id grabber

PCRE (PHP <7.3)
Grabs the ID for the regex101.com permalink code. If a revision number is provided, grab that as well.
Submitted by chris mccoy - 11 years ago (Last modified 8 months ago)
1...900901902

Community Library Entry

0

Regular Expression
PCRE (PHP <7.3)

/
^.*((?<req_method>GET|POST|PUT|DELETE|CONNECT|OPTIONS|HEAD[^ ]\w+)\s*(?<req_path>[^ ][-._?=%&\/[:alnum:]]*)\s*(?<req_protocol>[^ ][.\/\dHTFSP]+){0,1})|(\s*(status:\s*(?<req_status>[^ ]\d+))\s*(len:\ (?<req_len>[^ ]\d+)){0,1}\s*(time:\s*(?<req_time>[^ ][.\d]+)){0,1}\s*(microversion:\s*(?<req_mver>[^ ][.\d]+)){0,1}){0,1}$
/
mxg
Open regex in editor

Description

http message statement, as for example in openstack log, key: message

Submitted by anonymous - 7 years ago