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 = '`Size: (?:Age_Youth|[a-zA-Z0-9]+)(?:[ \t]*(?:or|[-/?])[ \t]*[a-zA-Z0-9]+)+`m'; $str = 'Size: 10, Size: 12, Size: 12M, Size: 13-15, Size: 14, Size: 14.5, Size: 15, Size: 15.5, Size: 16, Size: 16.5, Size: 17, Size: 17.5, Size: 18, Size: 18.5, Size: 18/24, Size: 18M, Size: 19, Size: 19.5, Size: 1X, Size: 2, Size: 2 - 18/20, Size: 20, Size: 20.5, Size: 22, Size: 22-24, Size: 2-3-4-43621, Size: 2-3T-4T, Size: 24, Size: 24", Size: 2-4-6, Size: 2-4-6-8-10-12-14-16-18-20, Size: 24M, Size: 26, Size: 28", Size: 28W, Size: 29W, Size: 2T, Size: 2T/3T, Size: 2T/3T-4T, Size: 2T-3T-4T, Size: 2T-3T-4T-43621, Size: 2T-3T-4T-43621-7, Size: 2T-3T-4T-5/6T, Size: 2T-3T-4T-5T, Size: 2T-3T-4T-5T-6T, Size: 2T-4T-43621, Size: 2T-4T-5/6T, Size: 2T-4T-6T, Size: 2X, Size: 2XL, Size: 3, Size: 3 - 22/24, Size: 30, Size: 30-32-34-36, Size: 30-32-34-36-38, Size: 30-32-34-36-38-40, Size: 30-32-34-36-38-40-42-44, Size: 30-32-34-36-38-40-42-44-28, Size: 30-32-34-36-38-40-42-44-46, Size: 30-32-34-36-38-40-42-44-46-48, Size: 30-32-34-36-38-40-42-44-48, Size: 30-32-34-36-38-42, Size: 30-32-34-36-40-48, Size: 30-32-34-38, Size: 30-32-38, Size: 30-34-36-38-40, Size: 30-34-38, Size: 30W, Size: 30W or 50W, Size: 30W or 50W-32W-34W-36W-38W-40W-42W-44W-46W-48W, Size: 31W, Size: 32, Size: 32-34-36-38, Size: 32-34-36-38-40, Size: 32-34-36-38-40-42-44-46-48-50, Size: 32-34-36-38-44, Size: 32W, Size: 33W, Size: 34, Size: 34-36-38-40-42-44-46-48-50, Size: 34-36-58, Size: 34-56-58, Size: 34-56-58-60-62, Size: 34-56-58-60-62-64, Size: 34W, Size: 34W", Size: 35W, Size: 35W", Size: 36, Size: 36-38-40-42-44-46-48-50, Size: 36-38-40-42-44-46-48-50-52-54, Size: 36-38-40-42-44-46-48-50-52-54-56, Size: 36-38-40-42-44-46-48-50-52-54-56-58, Size: 36W, Size: 37W, Size: 37W", Size: 38, Size: 38-40-42-44-46-48-50, Size: 38-40-42-44-46-48-50-52-54, Size: 38-40-42-44-46-48-50-52-54-56, Size: 38-40-42-44-46-48-50-52-54-56-58, Size: 38W, Size: 3T, Size: 3T-4T-5T, Size: 3X, Size: 3XL, Size: 4, Size: 4 - 26/28, Size: 40, Size: 40-42, Size: 40-42-44-46-48, Size: 40-42-44-46-48-50-52, Size: 40-42-44-46-48-50-52-54, Size: 40W, Size: 40W", Size: 4-10-12, Size: 41548, Size: 42, Size: 42-44-46-48-50, Size: 42-44-46-48-50-52, Size: 42-44-46-48-50-52-54-56-58, Size: 42-44-46-48-50-52-54-56-58-60, Size: 42-44-46-48-50-52-56-54, Size: 42W, Size: 43619-06-d?c, Size: 43619-06-d?c-d?c-18, Size: 43619-06-dc-dc-18, Size: 43621, Size: 43621", Size: 43621-7, Size: 43715, Size: 43778, Size: 44, Size: 44", Size: 4-43621-7, Size: 44-46-48, Size: 44W, Size: 44W", Size: 46, Size: 4-6-8-10-12-14-16-18-20, Size: 4-6-8-10-12-14-16-18-20-22, Size: 4-6-8-10-12-14-16-18-20-22-24, Size: 46W, Size: 46W", Size: 48, Size: 48", Size: 48-50, Size: 48W, Size: 48W", Size: 4T, Size: 4T", Size: 4X, Size: 4X", Size: 5 - 30/32, Size: 5/6T, Size: 50, Size: 50W, Size: 50W", Size: 52, Size: 52-54, Size: 52-56-54, Size: 52-56-54-58-60, Size: 52W, Size: 54, Size: 54", Size: 54W, Size: 54W", Size: 56, Size: 56", Size: 56-58, Size: 56-58-60-62, Size: 56-58-60-62-64, Size: 56-58-60-62-64-66, Size: 56W", Size: 58, Size: 58", Size: 58-60-62-64, Size: 5T, Size: 5T", Size: 6, Size: 60, Size: 6-10, Size: 62, Size: 64, Size: 64", Size: 66, Size: 6-8-10-12-14-16-18-20-22-24, Size: 6-8-10-12-14-16-18-20-24-22, Size: 6M, Size: 6M-12M-18M, Size: 6M-12M-18M-24M, Size: 6T, Size: 7, Size: 8, Size: 8", Size: 8-10-12, Size: 8-10-12-14", Size: Age_Youth, Size: Age_Youth-S/M-L/XL, Size: d?c-18, Size: d?c-18-18/24, Size: dc-18-18/24, Size: L, Size: L/XL, Size: M, Size: NB, Size: NB-6M-12M-18M, Size: NB-6M-12M-18M-24M, Size: NB-6M-12M-18M-24M", Size: NB-6M-18M-24M, Size: One Size, Size: One Size", Size: OS 5Pack, Size: OS 6Pack, Size: S, Size: S - 5XL, Size: S/M, Size: S/M-L/XL, Size: S/M-L/XL-2X/, Size: S/M-L/XL-2XL/, Size: S/M-L/XL-2XL/3XL, Size: S/M-L/XL-2XL/-3XL/, Size: S/M-L/XL-2XL/3XL-4XL/5XL, Size: S/M-L/XL-2XL/4XL, Size: S/M-L/XL-XL/2XL, Size: S-L/XL, Size: S-M-4X, Size: S-M-L", Size: S-M-L/XL, Size: S-M-L-XL-2X, Size: S-M-L-XL-2X-3X, Size: S-M-L-XL-2XL-3XL-4X-5XL-6XL, Size: S-M-L-XL-3X, Size: S-M-L-XL-XXL, Size: S-M-L-XL-XXL-3X, Size: S-M-L-XL-XXL-3X-4X, Size: ST, Size: XL, Size: XL", Size: XS, Size: XS/S, Size: XS/S-M/L, Size: XS/S-M/XL, Size: XS/S-S/M-M/L-L/XL-XL/2XL, Size: XS-S/M-L/XL, Size: XS-S-M-L", Size: XS-S-M-L-XL", Size: XS-S-M-L-XL-2X, Size: XS-S-M-L-XL-2X-3X, Size: XS-S-M-L-XL-2XL", Size: XS-S-M-L-XL-2XL-3XL-4X, Size: XXL, Size: XXS, Size: XXS-3XL, Size: XXS-S/M-L/XL-2XL/, Size: XXS-S-L-XL, Size: XXS-S-M-L, Size: XXS-S-M-XL, Size: XXS-XL-2XL-3XL, Size: XXS-XS-M-L-XL, Size: XXS-XS-S, Size: XXS-XS-S-3XL, Size: XXS-XS-S-L-XL, Size: XXS-XS-S-M-L, Size: XXS-XS-S-M-L-XL, Size: XXS-XS-S-M-L-XL-2XL, Size: XXS-XS-S-M-L-XL-2XL-3XL, Size: XXS-XS-S-XL,'; 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