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

/
/
ig

Test String

Code Generator

Language

Generated Code

$re = '/(\"POST .*)(wp-login.php)([^\"]*\"\s)(\b40[6|3|4]\b)/i'; $str = '74.206.226.132 - - [25/Aug/2015:12:22:53 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:53 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:53 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:53 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 74.206.226.132 - - [25/Aug/2015:12:22:54 -0700] "POST //wp-login.php HTTP/1.0" 406 323 "-" "-" 108.4.106.36 - - [25/Aug/2015:12:23:19 -0700] "GET /wp-content/uploads/2015/06/picture.jpg HTTP/1.1" 200 4042 "https://www.google.com/" "Mozilla/5.0 (iPad; CPU OS 8_4 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12H143 Safari/600.1.4" 198.46.86.215 - - [25/Aug/2015:12:23:56 -0700] "POST /wp-cron.php?doing_wp_cron=1440530636.3141849040985107421875 HTTP/1.0" 200 - "-" "WordPress/4.2.3; http://www.somewebsite.com" 50.200.239.110 - - [25/Aug/2015:12:23:55 -0700] "GET /section/somepage/ HTTP/1.1" 200 5797 "https://www.google.com" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:40.0) Gecko/20100101 Firefox/40.0" 50.200.239.110 - - [25/Aug/2015:12:23:58 -0700] "GET /wp-content/themes/somewebsite/style.css HTTP/1.1" 200 54916 "http://www.somewebsite.com/section/somepage/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:40.0) Gecko/20100101 Firefox/40.0" 50.200.239.110 - - [25/Aug/2015:12:23:58 -0700] "GET /wp-content/plugins/contact-form-7/includes/css/styles.css?ver=4.2.2 HTTP/1.1" 200 1103 "http://www.somewebsite.com/section/somepage/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:40.0) Gecko/20100101 Firefox/40.0" '; 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