Regular Expressions 101

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Community Patterns

0

a

PCRE (PHP <7.3)
a
Submitted by a - 9 years ago
0

y

PCRE (PHP <7.3)
all less jpg
Submitted by w - 9 years ago
0

test

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
0

Find an exact phrase only if it is within a certain number of chars.

PCRE (PHP <7.3)
Find an exact phrase (with each space and character in its own place) only if it is within the first 40 characters of the entire sentence. Useful to search non-standard phrases in log files.
Submitted by RicardoSPimentel - 9 years ago
0

url validator

PCRE (PHP <7.3)
no description available
Submitted by Briareos - 9 years ago
0

Open and Closing Markup tags on Single Line Markup

PCRE (PHP <7.3)
Quick Dirty Working
Submitted by Timothy Smith - 9 years ago
0

NATO Stock Number (with or without NSC)

PCRE (PHP <7.3)
RegEx to validate a NATO Stock Number with or without the NATO Stock Code and with or without dashes
Submitted by Matthew Perryman - 9 years ago
0

url validation HTML5

ECMAScript (JavaScript)
This is validation that is used in html5 for validate the url. http://www.faqs.org/rfcs/rfc3987.html
Submitted by Alex Matos - 9 years ago
0

RFC Email address attempt

PCRE (PHP <7.3)
This looks to attempt to validate email addresses per the RFC. I don't know how accurate it is.
Submitted by anonymous - 9 years ago
0

Matches only word without specific HTML tag around it.

PCRE (PHP <7.3)
This will match a word that is not wrapper by the a specified HTML element (with a class).
Submitted by Johnny Ji - 9 years ago
0

Search href in <a> tag (internal links)

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
0

<Trigger R="In a burst of feathers, a portal appears!" SD="DUCK PORTAL

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
0

date format slicing

PCRE (PHP <7.3)
lookahead
Submitted by Kmna - 9 years ago
0

Number

PCRE (PHP <7.3)
no description available
Submitted by Jaromir Muller - 9 years ago
0

Apache log regex

PCRE (PHP <7.3)
Regex pattern for Apache log
Submitted by Sujan Thapa - 9 years ago
0

date validation during input

PCRE (PHP <7.3)
this regex is able to validate a date (format dd.mm.yyyy) in every state of user typing. i use it to ensure that the user isn't able to type in an invalid date at all (except from a leap year check which is done afterwards) The regex also makes assumptions of 'missed' separators so 1234 is captured...
Submitted by anonymous - 9 years ago
0

Testing (delete)

PCRE (PHP <7.3)
Testing (delete)
Submitted by Testing (delete) - 9 years ago
0

/../ directory path cleaner

PCRE (PHP <7.3)
Replaces preceeding directory with / when ../ is used.
Submitted by Mr.Deek - 9 years ago
0

Validate Password strength

PCRE (PHP <7.3)
(?=.*[A-Z]) # must contain 1 uppercase letter (?=.*[0-9]) # must contain 1 digit (?!.\n) # must not contain a newline character (?!.*\s) # must not contain any whitespace characters (?=.*[!$#+@%&]) # nust contain one of these symbols .{8,} # match a...
Submitted by anonymous - 9 years ago
0

Command line with escape

PCRE (PHP <7.3)
splits into command arguments: spaces split quotes keep spaced texts together \" escapes the quote
Submitted by Skycoder42 - 9 years ago
1...348349350351352...900

Community Library Entry

0

Regular Expression
PCRE (PHP <7.3)

/
^(?:(?:(?:(3)\.?([01]2))\.?(\d{1,4})?)|(?:(3)\.?(1)\.?([469]\d?))|([1-2][0-9]|0?[1-9])\.?(?:(1[0-2]|0?[1-9])\.?(\d{1,4})?|(0)?)|(?:(31)\.?(?:(?:(0?[13578]|1[02])\.?(\d{1,4})?)|(0)?))|(?:(30)\.?(?:(?:(0?[13456789]|1[0-2])\.?(\d{1,4})?)|(0)?))|([0-9]))$
/
gm
Open regex in editor

Description

this regex is able to validate a date (format dd.mm.yyyy) in every state of user typing. i use it to ensure that the user isn't able to type in an invalid date at all (except from a leap year check which is done afterwards)

The regex also makes assumptions of 'missed' separators so 1234 is captured in groups which can then be transformed to \1.\2.\3 -> 12.3.4

It was intensively but not exhaustivly tested

Submitted by anonymous - 9 years ago