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

$re = '/(?i)(\bmarche\s(?:\d{5})?\-?(?:\d{3,5})|(?:\d{5})\-?(?:\d{4})?\smarche\b|[,]marche[\.,]|marche$)/m'; $str = 'NOT MATCH Diabetologist,5,rue du marche,93160 Noisy le Grand,France. Diabetologist,5,rue du lemarche,93160 Noisy le Grand,France. Department of sea science,University Polytechnic of Marche,via Brecce Bianche,60100 Ancona,Italy. ALL MATCH Department of sea science,University Polytechnic of ,Marche,via Brecce Bianche,60100 Ancona,Italy. Department of sea science,University Polytechnic of ,Marche 12345-1234,via Brecce Bianche,60100 Department of sea science,University Polytechnic of ,Marche Department of sea science,University Polytechnic of ,Marche. Department of sea science,University Polytechnic of ,Marche 12345 Department of sea science,University Polytechnic of ,Marche 12345. Department of sea science,University Polytechnic of ,12345-1234 Marche. Department of sea science,University Polytechnic of ,12345 Marche. Department of sea science,University Polytechnic of ,Marche 12345,italy'; preg_match_all($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