Regular Expressions 101

Save & Manage Regex

  • Current Version: 1
  • Save & Share
  • Community Library

Flavor

  • PCRE2 (PHP)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java
  • .NET 7.0 (C#)
  • Rust
  • PCRE (Legacy)
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests
Sponsors
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

Generated Code

$re = '/@Prompt\(\'[^\']*\'(\s*,\s*\'[^\']*\')*\)/'; $str = 'SELECT sum(EXT_BAD_DEBT_HIST.BILL_AMT), sum(EXT_BAD_DEBT_HIST.BILL_OPEN_AMT), TIME_MONTH.YEAR, TIME_MONTH.MONTH_NAME, @Prompt(\'Desired %\',\'N\',,Mono,free,Not_Persistent), TIME_MONTH.MONTH_NUM_OVERALL, TIME_MONTH.FIRST_DAY, TIME_MONTH.LAST_DAY FROM TIME_MONTH INNER JOIN EXT_BAD_DEBT_HIST ON (EXT_BAD_DEBT_HIST.MONTH_NUM_OVERALL=TIME_MONTH.MONTH_NUM_OVERALL) INNER JOIN RSK_SHARED.LO_PRICE_GROUP RSK_SHARED_LO_PRICE_GROUP2 ON (RSK_SHARED_LO_PRICE_GROUP2.PRICE_GROUP_KEY=EXT_BAD_DEBT_HIST.CUST_PGROUP) WHERE ( TRUNC(EXT_BAD_DEBT_HIST.BD_DATE) = TRUNC(SYSDATE) AND EXT_BAD_DEBT_HIST.CUSTOMER_CATEGORY_CODE = 20 AND ( EXT_BAD_DEBT_HIST.BILL_CYCLE = @Prompt(\'Bill Cycle\',\'A\',\'MIGRATION\\BC\',Mono,primary_key,Not_Persistent) OR -1 = @Prompt(\'Bill Cycle\',\'A\',\'MIGRATION\\BC\',Mono,primary_key,Not_Persistent) ) AND TIME_MONTH.FIRST_DAY Is Not Null AND TIME_MONTH.LAST_DAY Is Not Null AND ( ( RSK_SHARED_LO_PRICE_GROUP2.PRICE_GROUP In @Prompt(\'Price Groups Sub-Groups\',\'A\',\'[Lookup] Price Group (2)\\Nested Price Group\',Multi,Constrained,Not_Persistent) OR (\'All Large 552\' In @Prompt(\'Price Groups Sub-Groups\',\'A\',\'[Lookup] Price Group (2)\\Nested Price Group\',Multi,Constrained,Not_Persistent) AND RSK_SHARED_LO_PRICE_GROUP2.PRICE_GROUP_CODE = 4) OR (\'All SME\' In @Prompt(\'Price Groups Sub-Groups\',\'A\',\'[Lookup] Price Group (2)\\Nested Price Group\',Multi,Constrained,Not_Persistent) AND RSK_SHARED_LO_PRICE_GROUP2.PRICE_GROUP_CODE = 5) OR \'All\' In @Prompt(\'Price Groups Sub-Groups\',\'A\',\'[Lookup] Price Group (2)\\Nested Price Group\',Multi,Constrained,Not_Persistent) ) AND EXT_BAD_DEBT_HIST.CUST_PGROUP <> 154 AND EXT_BAD_DEBT_HIST.CUST_PGROUP NOT BETWEEN 161 AND 166 ) ) GROUP BY TIME_MONTH.YEAR, TIME_MONTH.MONTH_NAME, @Prompt(\'Desired %\',\'N\',,Mono,free,Not_Persistent), TIME_MONTH.MONTH_NUM_OVERALL, TIME_MONTH.FIRST_DAY, TIME_MONTH.LAST_DAY'; preg_match_all($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