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

/
/
gm

Test String

Code Generator

Language

Generated Code

$re = '/^Item([1-9]|[1-4][0-9]|50)$/m'; $str = 'Winst Item1 Item2 Item3 Item4 Item5 Item6 Item7 Item8 Item9 Item10 Item11 Item12 Item13 Item14 Item15 Item16 Item17 Item18 Item19 Item20 Item21 Item22 Item23 Item24 Item25 Item26 Item27 Item28 Item29 Item30 Item31 Item32 Item33 Item34 Item35 Item36 Item37 Item38 Item39 Item40 Item41 Item42 Item43 Item44 Item45 Item46 Item47 Item48 Item49 Item50 Item51 Item52 Item53 Item54 Item55 Item56 Item57 Item58 Item59 Item60 Item61 Item62 Item63 Item64 Item65 Item66 Item67 Item68 Item69 Item70 Item71 Item72 Item73 Item74 Item75 Item76 Item77 Item78 Item79 Item80 Item81 Item82 Item83 Item84 Item85 Item86 Item87 Item88 Item89 Item90 Item91 Item92 Item93 Item94 Item95 Item96 Item97 Item98 Item99 Item100 '; preg_match_all($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