Regular Expressions 101

Save & Manage Regex

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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
Processing...

Test String

Code Generator

Language

Generated Code

$re = '/.*((social|(simple|free|floating)\-share)\-buttons\.com|e\-buyeasy\.com|wp(securitycheck|themedetector)\.co\.uk|erot\.co|webmonetizer\.net|howtostopreferralspam\.eu|trafficmonetizer?\.org|непереводимая\.рф|websites\-reviews\.com|sanjosestartups\.com|4webmasters\.org|aliexpress\.com|event\-tracking\.com|webmaster\-traffic\.com|vitaly|torture\.ml|amanda\-porn\.ga|generalporn\.org|\-porn\.ga|\-forum\.ga|\-free\-traffic\.ga|buy\-cheap\-online\.info|get\-free\-traffic\-now|googlsucks\.com|o\-o\.|humanorightswatch\.org|bestwebsitesawards\.com|resellerclub|smailik\.org|darodar\.com|hulfingtonpost\.com|blackhatworth\.com|(buttons|videos|buttons)\-for(\-your)?\-(website|business)\.com|success\-seo\.com|semalt|best\-seo\-(solution|offer)|dailyrank\.net|sitevaluation\.org|100dollars\-seo\.com|forum69\.info|7makemoneyonline\.com|anticrawler\.org|baixar\-musicas\-gratis\.com|descargar\-musica\-gratis\.net).*/i'; $str = 'site5.floating-share-buttons.com / referral e-buyeasy.com / referral wpsecuritycheck.co.uk / referral wpthemedetector.co.uk / referral erot.co / referral webmonetizer.net / referral howtostopreferralspam.eu / referral trafficmonetizer.org / referral wpsecuritycheck.co.uk / referral wpthemedetector.co.uk / referral trafficmonetize.org / referral непереводимая.рф / referral непереводимая.рф / organic websites-reviews.com / referral sanjosestartups.com / referral 4webmasters.org / referral site1.floating-share-buttons.com site3.floating-share-buttons.com s.click.aliexpress.com/e/ay3rfmzfi /organic www.event-tracking.com / referral webmaster-traffic.com / referral vitaly rules google / organic torture.ml / referral amanda-porn.ga / referral generalporn.org / referral depositfiles-porn.ga / referral youporn-forum.ga / referral site2.floating-share-buttons.com rapidgator-porn.ga / referral meendo-free-traffic.ga / referral buy-cheap-online.info / referral www.Get-Free-Traffic-Now.com / referral addons.mozilla.org / referral googlsucks.com / referral simple-share-buttons.com / referral social-buttons.com / referral s.click.aliexpress.com / referral o-o-8-o-o.com / referral humanorightswatch.org / referral o-o-6-o-o.com / referral bestwebsitesawards.com / referral resellerclub scam / organic darodar.com / referral hulfingtonpost.com / referral ilovevitaly.com / referral blackhatworth.com / referral resellerclub scam / referral forum20.smailik.org / referral buttons-for-website.com buttons-for-your-website.com videos-for-your-business.com success-seo.com semaltmedia.com dailyrank.net sitevaluation.org 100dollars-seo.com forum69.info best-seo-solution.com best-seo-offer.com semalt.semalt.com semalt.com 7makemoneyonline.com anticrawler.org baixar-musicas-gratis.com descargar-musica-gratis.net'; preg_match_all($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