Regular Expressions 101

Save & Share

Flavor

  • PCRE2 (PHP >=7.3)
  • PCRE (PHP <7.3)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java 8
  • .NET 7.0 (C#)
  • Rust
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests

Tools

Sponsors
There are currently no sponsors. Become a sponsor today!
An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

$re = '/(?<=\+)[0-9\-]*/m'; $str = '/+1-541-754-3010 156 Alphand_St. <J Steeve> 133, Green, Rd. <E Kustur> NY-56423 ;+1-541-914-3010 +1-541-984-3012 <P Reed> /PO Box 530; Pollocksville, NC-28573 :+1-321-512-2222 <Paul Dive> Sequoia Alley PQ-67209 +1-741-984-3090 <Peter Reedgrave> _Chicago :+1-921-333-2222 <Anna Stevens> Haramburu_Street AA-67209 +1-111-544-8973 <Peter Pan> LA +1-921-512-2222 <Wilfrid Stevens> Wild Street AA-67209 <Peter Gone> LA ?+1-121-544-8974 <R Steell> Quora Street AB-47209 +1-481-512-2222 <Arthur Clarke> San Antonio $+1-121-504-8974 TT-45120 <Ray Chandler> Teliman Pk. !+1-681-512-2222! AB-47209, <Sophia Loren> +1-421-674-8974 Bern TP-46017 <Peter O\'Brien> High Street +1-908-512-2222; CC-47209 <Anastasia> +48-421-674-8974 Via Quirinal Roma <P Salinger> Main Street, +1-098-512-2222, Denver <C Powel> *+19-421-674-8974 Chateau des Fosses Strasbourg F-68000 <Bernard Deltheil> +1-498-512-2222; Mount Av. Eldorado +1-099-500-8000 <Peter Crush> Labrador Bd. +1-931-512-4855 <William Saurin> Bison Street CQ-23071 <P Salinge> Main Street, +1-098-512-2222, Denve <P Salinge> Main Street, +1-098-512-2222, Denve /+5-541-754-3010 156 Alphandria_Street. <Jr Part> 1333, Green, Road <F Fulgur> NW-46423 ;+6-541-914-3010! +5-541-984-3012 <Peter Reeves> /PO Box 5300; Albertville, SC-28573 :+5-321-512-2222 <Paulo Divino> Boulder Alley ZQ-87209 +3-741-984-3090 <F Flanaghan> _Chicago Av. :+3-921-333-2222 <Roland Scorsini> Bellevue_Street DA-67209 +8-111-544-8973 <Laurence Pantow> SA +8-921-512-2222 <Raymond Stevenson> Joly Street EE-67209 <John Freeland> Mantow ?+2-121-544-8974 <Robert Mitch> Eleonore Street QB-87209 +2-481-512-2222? <Arthur Paternos> San Antonio $+7-121-504-8974 TT-45121 <Ray Charles> Stevenson Pk. !+7-681-512-2222! CB-47209, <JP Gorce> +9-421-674-8974 New-Bern TP-16017 <P McDon> Revolution Street +2-908-512-2222; PP-47209 <Elizabeth Corber> +8-421-674-8974 Via Papa Roma <C Saborn> Main Street, +15-098-512-2222, Boulder <Colin Marshall> *+9-421-674-8974 Edinburgh UK <Bernard Povit> +3-498-512-2222; Hill Av. Cameron +12-099-500-8000 <Pete Highman> Ontario Bd. +8-931-512-4855 <W Mount> Oxford Street CQ-23071 <Donald Drinkaw> Moon Street, +3-098-512-2222, Peterville'; preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0); // Print the entire match result var_dump($matches);

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php