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 = '/\b((ht|f)tp(s)?:\/\/|www\.)+[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9]{2,}((\/)?([-a-zA-Z0-9@:%_\+.~#?&\/=]*)?)\b/m'; $str = 'https://www.dfir-alliance.net/ https://www.ibm.com/developerworks/community/groups/service/html/communityview?communityUuid=2245aa39-fa5c-4475-b891-14c205f7333c https://www.ibm.com/search?lang=en&cc=us&q=thread%20dump%20analyzer%20download,whatever https://www.ibm.com/support/pages/ibm-thread-and-monitor-dump-analyzer-java-tmda https://www.ibm.com/support/pages/ibm-thread-and-monitor-dump-analyzer-java-tmda?mhsrc=ibmsearch_a&mhq=thread%20dump%20analyzer%20download|dfd ftp://whatever.de https://espn.com https://www.espn.com http://www.coderjournal.com http://coderjournal.net http://coderjournal.org e Cookies,WEBHIST,...b,0,https://softpedia.com/another%20string https://mywebsite.com:9100/index.asp http://www.example.com/questions/3456/my-document https://mywebsite.com:9100/ www.espn.com/ www.espn.co.uk/ www.longTLD-testing.careers/username=119684548977 espn.com microsoft.com&form=B00032&ocid=SettingsHAQ-BingIA&mkt=en-US http://microsoft.com/&form=B00032&ocid=SettingsHAQ-BingIA&mkt=en-US https://this-shouldn\'t.match@example.com my-burner-email@protonmail.com another_burner.co.uk@tutanota.com System.evtx TIFImage.Document_.tiff: Training.pdf UsrClass.dat com.ibm.cloud.console.analytics.anonymousId) com.jabra.directonline: com.squirrel.Teams.Teams: com.squirrel.slack.slack: docxfile_.docx/vba htmlfile_.html: SourceForge.net) Office\\root\\Office16\\EXCEL.EXE: Office\\root\\Office16\\OUTLOOK.EXE: Office\\root\\Office16\\POWERPNT.EXE: Office\\root\\Office16\\WINWORD.EXE: C:\\Users\\User\\AppData\\Local\\Temp\\is-I16AS.tmp\\SIS119_Setup.tmp ..\\..\\..\\..\\..\\..\\..\\Downloads\\malware.zip ma.b zoom.us.Zoom 2.0.13 2.0.13.0 0321.zip 0321.zip.lnk'; preg_match_all($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