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

/
/
g

Test String

Code Generator

Language

Generated Code

$re = '/(?:\s+JOIN\s+)(\w+\.\w+)|(?:\s+FROM\s+)(\w+\.\w+)/'; $str = '"let Source = DB2.Database(""10.231.250.32"", ""bcudb"", [HierarchicalNavigation=true, Implementation=""Microsoft"", Query=""SELECT i.ASSIGNMENT_GROUP, i.BUSINESS_SERVICE, i.CATEGORY, i.CAUSED_BY, i.CLOSE_CODE, i.CLOSED_ON, i.COMPANY, i.CONTACT_TYPE, i.DESCRIPTION, i.NUMBER, i.PARENT_INCIDENT, i.PRIORITY, i.RESOLVED_ON, i.SHORT_DESCRIPTION, i.CREATED_ON, i.CAUSE_CODE, i.CLOSED, i.CREATED, i.RESOLVED, i.RESOLUTION_MET, p.problem_id FROM EDWP_D2PM.SN_INC_RPTG_SCRUBBED i LEFT OUTER JOIN EDWP_D2PM.SN_INCIDENTS_CUST_RPTG p on p.number = i.number WHERE i.PRIORITY INLEFT OUTER JOIN EDWP_D2PM.SN_INCIDENTS_CUST_RPTG (\'1 - Critical\', \'2 - High\') AND TO_CHAR(i.created_on,\'YYYY-MM\') > (select to_char((CURRENT DATE - 12 MONTHS),\'YYYY-MM\') from SYSIBM.SYSDUMMY1) AND (i.CATEGORY <> \'Alert\' OR (i.CATEGORY IS NULL)) AND i.PARENT_INCIDENT IS NULL AND i.EXCLUSIONS <> \'R\' AND i.CLOSE_CODE <> \'Duplicate - No Action Taken\' with ur""]), RIGHT JOIN EDWP.TEMP blaha blah #""Changed Type"" = Table.TransformColumnTypes(Source,{{""RESOLVED_ON"", type datetime}}) in #""Changed Type"""'; preg_match_all($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