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 single character of: a, b, c or d
    [[ab][cd]]
  • 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]
  • Character class intersection
    [\w&&[^\d]]
  • 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{2}\d{4}\w)\/(\w{2}\d{4}\w\d{2}\w{3}))\s(\w{6})\s(\w+)\/(\d{4})\s(\d{4})/m'; $str = ' LMZ333 ALLOTMENT (0000) *TSC HDQRM5I .MADRIIB 160846 MADIB HQXL4/MADIB0009/7849644/MAD/IB/A/ES//RC// 1CUVILEON/CARLOS EDUARDO 5I8397J/IB2198J25JUN RZGMAD CS1/0850 1220 5I8327J/IB2194J06JUL MADRZG CS1/1745 2115 OSI 5I CTCP 34606686051-M OSI 5I POSI-DSAC//MADIB08AB/I/1 OSI 5I CARLOSCUVILIN//GMAIL.COM = ˜ '; preg_match_all($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