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

/
/
gi

Test String

Code Generator

Language

Generated Code

$re = '/[\w]+/i'; $str = ' Lorem123 Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry\'s standard dummy text ever since the 1500s, 童然沒。 when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum. 來用我一動 金在運，聲才重動國但院她！式不做會地飯工價大向李少的理意點單力那他亮所識營能大發；輕辦我部通錯幾們行目華別機。酒能害；龍腳我道度間，下格願專今功多品識！記鄉。 於期心黃河驗法轉現金快程眾同回心？這基情票們如，毛水題做……建子念足的紙也年的近覺？笑以條易給天好陽跟頭共發是務，市世帶成人！可天照重兩黨有生我來金，一負格有公考！害作大和過質地中影不怎不善光選試看體生最的家星們去樂司因念的？他及味它們速打媽斷先育於實常可業直正全：動只會式情以這詩？學社心了？成國合基兩自布策自心軍收響家：母進列月式出神須館，球裡大這車密不有間說山來銀事氣？出石操著說開動一孩定許然不了、利的法己給育有邊了助，這所上上過可時以而；院小自。位多檢：一場來，極同修車試人多交命家給身燈部作年女得期地不下土排不區位分題我我。深非真要必第們，花職有好低我實面害年會一些怎：夫時人給語好於為課關一，不下一著羅不物他班大程在實著保：外形制進沒寫：前能寫動造勢備不觀人看爾。It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using \'Content here, content here\', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for \'lorem ipsum\' will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).'; preg_match_all($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