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 = /\[buyer_(?:email|mobile|fullname|address)\] =>\s*\K.*/m str = 'SimpleXMLElement Object ( [error_code] => 00 [token] => 1182263526325de72aw828369e7aa [description] => SimpleXMLElement Object ( ) [transaction_status] => 00 [receiver_email] => myemail@gmail.com [order_code] => 3212423 [total_amount] => 200 [payment_method] => SimpleXMLElement Object ( ) [bank_code] => NLAZ [payment_type] => 1 [order_description] => SimpleXMLElement Object ( ) [tax_amount] => 0 [discount_amount] => 0 [fee_shipping] => 0 [return_url] => success.php [cancel_url] => order.php [buyer_fullname] => eric phuong [buyer_email] => eric@domain.com [buyer_mobile] => 012108609 [buyer_address] => abc [affiliate_code] => SimpleXMLElement Object ( ) [transaction_id] => 12345 )' # Print the match result str.scan(re) do |match| puts match.to_s end

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 Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html