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 = '/^(\w+) +\w+ +(?:\[[^\]]+\] *)?(\S.*?)(?: +(\([^)]+\)))?$/m'; $str = '0000 10 Text("TOTAL,SOME RANDOM TEXT") (1122aabb) 0010 5 D==1122aabb (1122aabb) 0015 17 Text("AND,SOME,MORE") (00000001) 002c 5 D==1 (1) 0031 1 !D (ccdd3344) 0032 5 D==ccdd3344 (ccdd3344) 0037 2 !1 (1) 0039 0 [AAAA] Fff 0039 1 [BBBB] Aaa 003a 6 N(05, eeff5566) (eeff5566) 0040 1 Qq 0041 2 $ab ([String]:"Unknown") 0043 f Call A/SomeFunc-X 0052 1 cd'; preg_match_all($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