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

/
/
iumg

Test String

Code Generator

Language

Generated Code

$re = '/^(?:(?:https?)(?::\/\/)?)?(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\x{00a1}-\x{ffff}0-9]-*)*[a-z\x{00a1}-\x{ffff}0-9]+)(?:\.(?:[a-z\x{00a1}-\x{ffff}0-9]-*)*[a-z\x{00a1}-\x{ffff}0-9]+)*(?:\.(?:[a-z0-9\x{00a1}-\x{ffff}\-]{2,}))\.?)(?::\d{2,5})?(?:[\/?#]\S*)?$/ium'; $str = 'https://www.google.com http://www.google.com http://google.com/ https://google.com/ www.google.com google.com https://www.google.com.ua http://www.google.com.ua http://google.com.ua https://google.com.ua/ www.google.com.ua google.com.ua https://mail.google.com http://mail.google.com mail.google.com http://xn--j1ail.xn--p1ai/ http://xn--j1ail.xn--p1ai/ https://кот.рф https://кот.рф/кто-там?троль=0&ролф=9 https://www.google.com/search?sxsrf=ALeKk03dlc_OUT_SIhGbPkeGLoL30Dp-2w%3A1614676106917&ei=igA-YImTL83MaL_3nMgM&q=linkify+php&oq=linkify+php&gs_lcp=Cgdnd3Mtd2l6EAMyBAgAEBMyCAgAEBYQHhATMggIABAWEB4QEzoHCAAQsAMQQzoCCAA6BAgAEEM6CAgAEBYQChAeOgYIABAWEB5QpixY5UNgjkZoA3ACeACAAcYBiAGhBpIBAzIuNZgBAKABAaoBB2d3cy13aXrIAQrAAQE&sclient=gws-wiz&ved=0ahUKEwiJgJaeoZHvAhVNJhoKHb87B8kQ4dUDCA0&uact=5 http://google https://google.c google google. .google .google.com goole.c ... '; preg_match_all($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