Regular Expressions 101

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Community Patterns

4

For Auto RTFs

PCRE (PHP <7.3)
no description available
Submitted by Dan Bloomquist - 12 years ago
4

Strip multi-line (star) comments from JavaScript, while leaving any CDATA sections intact.

PCRE (PHP <7.3)
This regular expression removes multi-line (star) comments from JavaScript, while leaving any CDATA sections intact. Use the global (g) modifier to match them all (if you plan to use PHP's preg_replace, the g modifier is not necessary), and use the (s) modifier to make dots match newlines (this will...
Submitted by Dane MacMillan - 12 years ago
2

MIME type verification

PCRE (PHP <7.3)
See http://tools.ietf.org/html/rfc2045#section-5.1
Submitted by Erin Millard - 12 years ago
1

PHP ReflectionParameter:__toString() parser

PCRE (PHP <7.3)
See http://www.php.net/manual/en/reflectionparameter.tostring.php
Submitted by Erin Millard - 12 years ago
13

PHP variable name

PCRE (PHP <7.3)
Valid PHP variable name as defined in the manual at http://php.net/manual/en/language.variables.basics.php
Submitted by Erin Millard - 12 years ago
52

Disorted Email Addresses

PCRE (PHP <7.3)
Matches distorted email addresses and converts them back to real ones.
Submitted by dislick - 12 years ago
40

URL regexp

PCRE (PHP <7.3)
A quite neat regular expression for URLs, e-mails..., I found on Matthew O'Riordan's blog.
Submitted by Matthew O'Riordan - 12 years ago
1...899900901

Community Library Entry

1

Regular Expression
PCRE2 (PHP >=7.3)

/
^(([D]{1,4}|[M]{1,4}|[Y]{2}|[Y]{4})(?<SEPARATOR>[-.\/_] )([D]{1,4}|[M]{1,4}|[Y]{2}|[Y]{4})(\k<SEPARATOR>)([D]{1,4}|[M]{1,4}|[Y]{2}|[Y]{4}))$
/
gm
Open regex in editor

Description

For the day: d Displays the day as a number without a leading zero (1-31). dd Displays the day as a number with a leading zero (01-31). ddd Displays the day as an abbreviation (Sun-Sat) dddd Displays the day as a full name (Sunday-Saturday)

For the month: m Displays the month as a number without a leading zero (1-12). mm Displays the month as a number with a leading zero (01-12). mmm Displays the month as an abbreviation (Jan-Dec). mmmm Displays the month as a full name (January-December).

For the year: yy Displays the year as a two-digit number (00-99). yyyy Displays the year as a four-digit number (0000-9999).

Additionally, the supported separators are:

  1. Hyphen (-)
  2. Underscore (_)
  3. Period (.)
  4. /
Submitted by EYA GHACHEM - a year ago