Regular Expressions 101

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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

/
/
g

Test String

Code Generator

Language

Generated Code

$re = '/([A-Z-]+(?: [A-Z]+)+(\r\n|\r|\n))/'; $str = 'BUILD THE ULTIMATE BRAWLER Design your ultimate LEGO Minifigure hero with unique style, strategy and personality. A cactus with an attitude? A scrappy janitor ninja who happens to have fighting chickens? A sledgehammer-swinging clown with a few scores to settle? Sure! Build the ultimate brawler and level them up with unlockable content! BATTLE THROUGH EPIC LEGO THEMES From the swashbuckling shores of Barracuda Bay, to the waterlogged caverns of Ninjago® Seabound, to a dusty wild west saloon and the mythical Monkie Kid jungle, all of your favorite LEGO themes are brawlable! Collect unlockable minifigs, power-ups, and emotes along the way. CROSS-PLAY WITH FRIENDS ACROSS PLATFORMS Team up and brawl 4v4, party with friends, or play a battle royale-style game mode where it’s “every-player-for-themself”. With multiple game modes, levels have unique challenges and win conditions.'; preg_match_all($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