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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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

/
/
g

Test String

Code Generator

Language

Generated Code

$re = '/(?<time>\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2},\d{3}) (?<level>\S*) (?<processor>\S*) (?<serviceLayer>\S*):(?<lineNumber>\d*) - (?<mess>.*)/'; $str = '2014-08-29 14:53:58,948 DEBUG ajp-bio-172.16.2.157-8009-exec-111 PostgresIdsDAOImpl#getDatabaseConnection:822 - Attempting to JDBC connect to the database 2014-08-29 14:53:58,949 DEBUG ajp-bio-172.16.2.157-8009-exec-111 PostgresIdsDAOImpl#getDatabaseConnection:833 - JDBC Driver is registered successfully 2014-08-29 14:53:58,954 DEBUG ajp-bio-172.16.2.157-8009-exec-111 PostgresIdsDAOImpl#select:389 - Database connection successfully closed. 2014-08-29 14:53:58,954 DEBUG ajp-bio-172.16.2.157-8009-exec-111 ContentManagementServiceImpl#getNiseImages:915 - Postgres returned 0 pix result(s). 2014-08-29 14:53:58,955 DEBUG ajp-bio-172.16.2.157-8009-exec-111 ContentManagementServiceImpl#getNiseImages:923 - Could not find any images after image ID 94611681 limit by 500 2014-08-29 14:53:58,955 DEBUG ajp-bio-172.16.2.157-8009-exec-111 IdsServiceImpl#getNiseImages:2687 - Failed to find any NISE URLs 2014-08-29 14:53:58,955 DEBUG ajp-bio-172.16.2.157-8009-exec-111 EventsServiceImpl#addUserActivity:82 - There are 1 user activities to be inserted. 2014-08-29 14:53:58,955 DEBUG ajp-bio-172.16.2.157-8009-exec-111 RestResource#getNewImages:267 - No new images found during this period 2014-08-29 14:54:00,002 DEBUG pool-2-thread-1 SessionServiceImpl#fetchBannedIps:201 - Banned Ips task is running now 2014-08-29 14:54:00,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#select:298 - Finding any number of entries in the DB table 2014-08-29 14:54:00,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#select:351 - Search query: SELECT * FROM ONLY bannedips WHERE id is not null; 2014-08-29 14:54:00,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#getDatabaseConnection:822 - Attempting to JDBC connect to the database 2014-08-29 14:54:00,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#getDatabaseConnection:833 - JDBC Driver is registered successfully 2014-08-29 14:54:00,360 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#select:389 - Database connection successfully closed. 2014-08-29 14:54:00,360 DEBUG pool-2-thread-1 SessionServiceImpl#fetchBannedIps:208 - Postgres returned 31164 banned ips 2014-08-29 14:54:00,418 DEBUG pool-2-thread-1 SessionServiceImpl#fetchBannedIps:222 - There are 31164 banned ips 2014-08-29 14:54:20,002 DEBUG pool-2-thread-1 UserServiceImpl#fetchLoginConfig:234 - Fetch the login configuration for banning IPs 2014-08-29 14:54:20,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#select:298 - Finding any number of entries in the DB table 2014-08-29 14:54:20,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#select:351 - Search query: SELECT * FROM ONLY sitesloginparameters WHERE usernamefail is not null; 2014-08-29 14:54:20,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#getDatabaseConnection:822 - Attempting to JDBC connect to the database 2014-08-29 14:54:20,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#getDatabaseConnection:833 - JDBC Driver is registered successfully 2014-08-29 14:54:20,008 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#select:389 - Database connection successfully closed. 2014-08-29 14:54:20,008 DEBUG pool-2-thread-1 UserServiceImpl#fetchLoginConfig:241 - Postgres returned 1 login config setting 2014-08-29 14:54:20,008 DEBUG pool-2-thread-1 UserServiceImpl#fetchLoginConfig:255 - LoginConfig Parameter is updated true 2014-08-29 14:54:30,002 DEBUG pool-2-thread-1 EventsServiceImpl#processUserActivities:49 - User activities task is running now 2014-08-29 14:54:30,002 DEBUG pool-2-thread-1 EventsServiceImpl#processUserActivities:56 - There are 1 user activities to be inserted 2014-08-29 14:54:30,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#select:82 - Finding any number of entries in the DB table 2014-08-29 14:54:30,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#select:131 - Search query: SELECT id,text FROM user_agents WHERE text=\'NISE-IDS solr-b04 14000\'; 2014-08-29 14:54:30,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#getDatabaseConnection:822 - Attempting to JDBC connect to the database 2014-08-29 14:54:30,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#getDatabaseConnection:833 - JDBC Driver is registered successfully 2014-08-29 14:54:30,011 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#select:175 - Database connection successfully closed. 2014-08-29 14:54:30,011 DEBUG pool-2-thread-1 EventsServiceImpl#getUserAgent:479 - Postgres returned 2 result(s). 2014-08-29 14:54:30,011 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#insert:403 - Inserting new entry into Postgres DB table 2014-08-29 14:54:30,011 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#getDatabaseConnection:822 - Attempting to JDBC connect to the database 2014-08-29 14:54:30,011 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#getDatabaseConnection:833 - JDBC Driver is registered successfully 2014-08-29 14:54:30,016 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#insert:449 - Database connection successfully closed. 2014-08-29 14:54:30,016 DEBUG pool-2-thread-1 EventsServiceImpl#insertUserActivity:454 - 1 user activity inserted 2014-08-29 14:54:30,016 DEBUG pool-2-thread-1 EventsServiceImpl#processUserActivities:70 - At the end of thread there are 0 user activities in the list 2014-08-29 14:55:00,001 DEBUG pool-2-thread-1 SessionServiceImpl#fetchBannedIps:201 - Banned Ips task is running now 2014-08-29 14:55:00,001 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#select:298 - Finding any number of entries in the DB table 2014-08-29 14:55:00,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#select:351 - Search query: SELECT * FROM ONLY bannedips WHERE id is not null; 2014-08-29 14:55:00,002 DEBUG pool-2-thread-1 PostgresIdsDAOImpl#getDatabaseConnection:822 - Attempting to JDBC connect to the database'; 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