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 = '/^(https?:\/\/)?(www\.)?([A-Za-zа-яА-Я\.]+).*/m'; $str = 'http://sto.mediaalyans.by/kontakty/ http://www.mediaalyans.by/hbg/5ckogu-sizai-100d50dsa150c406860hz http://www.mediaalyans.by/blog/biznes-analitika/trends/ http://torcevik.mediaalyans.by/catalog/tapflo/ctv/ http://torcevik.mediaalyans.by/catalog/sihi/lem/ http://www.mediaalyans.by/portfolio-polygraf/ http://torcevik.mediaalyans.by/catalog/sigma/ecp/ http://www.mediaalyans.by/blog/socseti/ http://www.mediaalyans.by/yzd_19kobe-xmas063b180arcx http://www.mediaalyans.by/blog/usability-ux/psychology-design/ http://www.mediaalyans.by/wch/50kg-maido89c0fy-17zh3a-w http://www.медиаальянс.by/odq-58auc-fausto3408n01-10gd104cgl-1a http://www.mediaalyans.by/qrw/e6worldcycle-wh970crud-k-0139sp397306z http://www.mediaalyans.by/pjh/e2watch-shop65f2ci-at-0047 http://www.mediaalyans.by/gzko_b4rs-online9483cl-neo_plus-es6036-dr17v http://www.mediaalyans.by/reklama-v-internete/bannernaya-reklama/ http://www.mediaalyans.by/tiee_56airu-shop2ce12sa-cleanbox-cl-l https://www.mediaalyans.by/3-priema-tipografyky-na-saite/ mediaalyans.by/lgal/24merry-net4ac0bouonj-gp-sp http://torcevik.mediaalyans.by/catalog/fristam/fl-fl3/ http://www.mediaalyans.by/5-trendov-goda-v-disaine/ '; preg_match_all($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