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
Processing...

Test String

Code Generator

Language

Generated Code

$re = '/(?U)\s*<key>GA\X*<\/dict>/'; $str = '<dict> <key>account.logout</key> <dict> <key>GA</key> <dict> <key>action</key> <string>ButtonPressed</string> <key>category</key> <string>Account</string> <key>label</key> <string>Logout</string> </dict> <key>MP</key> <dict> <key>name</key> <string>account logged out</string> <key>people</key> <dict> <key>__set__</key> <dict> <key>logged into account</key> <false/> </dict> </dict> <key>properties</key> <dict> <key>_flow</key> <string>login</string> </dict> </dict> <key>ABOY</key> <dict> <key>name</key> <string>account_logout_free2move</string> <key>people</key> <dict> <key>logged_in_to_free2move</key> <false/> </dict> </dict> </dict> <key>account.notification.create.facebook</key> <dict> <key>GA</key> <dict> <key>action</key> <string>ButtonPressed</string> <key>category</key> <string>Account</string> <key>label</key> <string>Create Facebook</string> </dict> <key>MP</key> <dict> <key>name</key> <string>create account pressed</string> <key>properties</key> <dict> <key>_account_type</key> <string>facebook</string> <key>_flow</key> <string>login</string> </dict> </dict> </dict> <key>account.notification.create.success.facebook</key> <dict> <key>GA</key> <dict> <key>action</key> <string>AccountCreatedSuccessful</string> <key>category</key> <string>Account</string> <key>label</key> <string>Facebook</string> </dict> <key>MP</key> <dict> <key>name</key> <string>create account success</string> <key>people</key> <dict> <key>__set__</key> <dict> <key>account type</key> <string>facebook</string> <key>logged into account</key> <true/> </dict> <key>__set_current_timestamp__</key> <string>last logged in account</string> </dict> <key>properties</key> <dict> <key>_account_type</key> <string>facebook</string> <key>_flow</key> <string>account</string> </dict> </dict> <key>ABOY</key> <dict> <key>name</key> <string>account_created_free2move</string> <key>people</key> <dict> <key>logged_in_to_free2move</key> <true/> <key>has_free2move_account</key> <true/> </dict> <key>properties</key> <dict> <key>account_type</key> <string>facebook</string> </dict> </dict> </dict> <key>account.notification.declined</key> <dict> <key>GA</key> <dict> <key>action</key> <string>ButtonPressed</string> <key>category</key> <string>Account</string> <key>label</key> <string>Later</string> </dict> <key>MP</key> <dict> <key>name</key> <string>later pressed</string> <key>properties</key> <dict> <key>_flow</key> <string>account</string> </dict> </dict> </dict> <key>account.notification.shown</key> <dict> <key>GA</key> <dict> <key>action</key> <string>DialogueShown</string> <key>category</key>'; preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0); // Print the entire match result var_dump($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