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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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

/
/
g

Test String

Code Generator

Language

Generated Code

$re = '/(\|)*[\s]*\d{1,2}\/\d{1,2}\/\d{4}/'; $str = '6/29/2014 Thanks Elizabeth, I cannot afford those prices without the groupon, as I have been unemployed for over one year. If prices go down, or groupon offered, please let me know. | Maggie | | 6/26/2014 We checked your paperwork and you had 3 treatments for your lip and 3 treatments for your chin both done on groupon. We do not do groupons anymore so the current pricing for those areas are as follows | | Lip | Single treatment - 99 | 3 treat - 187.50 | 6 treat - 375 | 9 treat - 450 | | Chin | Single Treatment -101 | 3 treat - 201 | 6 treat - 402 | 9 treat - 482 | | I hope this was helpful | | 6/25/2014 Margaret lm on rc - she did not say why she was calling - lm for her that she was in our system and that it looked like she came for a groupon on the lip or chin, which we dont offer anymoer, but if she would like to call on Thursday we would pull her paperwork in Allentown -eliz | 8/28/2012 sw-eliz | 7/11/2012 She said that she lm 7/9 and sent email to cancel but did not hear back, I canceled 7/11 for her 7/13 appt. no fee-mb'; preg_match_all($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