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 = '/.*intranet.corp.internal.citizensbank.com\/google\/loading.asp[?](.*)/m'; $str = 'http://intranet.corp.internal.citizensbank.com/google/loading.asp?http://wmgtrib00001011/onlineforms/vpn.aspx?topnav http://intranet.corp.internal.citizensbank.com/google/loading.asp?http://docushare.corp.internal.citizensbank.com/dsweb/Get/Document-570486/?topnav http://intranet.corp.internal.citizensbank.com/google/loading.asp?https://departments.internal.citizensbank.com/sites/CommercialBanking/SitePages/Conflicts%20Office.aspx?topnav?cmcl?conflictsoffice http://intranet.corp.internal.citizensbank.com/google/loading.asp?https://departments.internal.citizensbank.com/sites/CommercialBanking/MT/_layouts/15/start.aspx#/Marketing Toolkit Pages/Marketing Toolkit.aspx?topnav?cmcl?mkttoolkit http://intranet.corp.internal.citizensbank.com/google/loading.asp?https://departments.internal.citizensbank.com/sites/CTS/Wiki_Library/DaaS%20Virtual%20Desktop.aspx?topnav?daas http://intranet.corp.internal.citizensbank.com/google/loading.asp?http://wiisrib00001317:8300/RedirectPage.aspx?topnav?matchgifts http://intranet.corp.internal.citizensbank.com/google/loading.asp?http://docushare.corp.internal.citizensbank.com/dsweb/Get/Document-611169/?feature?hr?mobile http://intranet.corp.internal.citizensbank.com/google/loading.asp?https://departments.internal.citizensbank.com/sites/TransformationPDO/SitePages/Home.aspx?topnav http://intranet.corp.internal.citizensbank.com/google/loading.asp?http://investor.citizensbank.com/about-us/our-company/leadership/board-of-directors.aspx?mobile http://intranet.corp.internal.citizensbank.com/google/loading.asp?https://departments.internal.citizensbank.com/sites/CommercialBanking/PC/default.aspx?topnav?cmcl?trainingdev '; preg_match_all($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