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

/
/

Test String

Code Generator

Generated Code

$re = '/Gas Commercial Service \([\S\s]+?(?:[\s]+(?:(?:(?:[\w]+ )*)?(?:[\w]+)?Tax:[xX\d\.\%\s]*?\$[\d\.\s]*?\$([\d\.]*)\s*?))(?:[\s]+(?:(?:(?:[\w]+ )*)?(?:[\w]+)?Tax:[xX\d\.\%\s]*?\$[\d\.\s]*?\$([\d\.]*)\s*?))?(?:[\s]+(?:(?:(?:[\w]+ )*)?(?:[\w]+)?Tax:[xX\d\.\%\s]*?\$[\d\.\s]*?\$([\d\.]*)\s*?))?(?:[\s]+(?:(?:(?:[\w]+ )*)?(?:[\w]+)?Tax:[xX\d\.\%\s]*?\$[\d\.\s]*?\$([\d\.]*)\s*?))?(?:[\s]+(?:(?:(?:[\w]+ )*)?(?:[\w]+)?Tax:[xX\d\.\%\s]*?\$[\d\.\s]*?\$([\d\.]*)\s*?))?(?:[\s]+(?:(?:(?:[\w]+ )*)?(?:[\w]+)?Tax:[xX\d\.\%\s]*?\$[\d\.\s]*?\$([\d\.]*)\s*?))?/'; $str = ' Due Date: 03/13/13 Electric Commercial Service (E2C) Meter Number: 298209 Reading 02/26/13 91391 Access Chg: 30 days x $0.6324 $18.97 Reading 01/27/13 90150 Access Chg: 1,241 kWh x $0.0532 $66.02 1241 Kilowatt Hours(KWH) Supply Chg: 1,241 kWh x $0.0269 $33.38 Your average daily usage was 41.37 KWH ECA: 1,241 kWh x $-0.001 $1.24 CR Capacity Chg: 1,241 kWh x $0.0012 $1.49 City Sales Tax: 2.5% x $118.62 $2.97 County Sales Tax: 1.23% x $118.62 $1.46 State Sales Tax: 2.9% x $118.62 $3.44 PPRTA Tax: 1% x $118.62 $1.19 ECA = Electric Cost Adjustment - Making energy-efficiency improvements to your business? Save more money with rebates. Visit csu.org/business for details. Total charge this service $127.68 Gas Commercial Service (G1C) Meter Number: 73757 Reading 02/26/13 25459 Access Chg (G1CL): 30 days x $0.7623 $22.87 Reading 01/27/13 25277 Access Chg (G1CL): 182 CCF x $0.1571 $28.59 182 Hundred Cubic Feet(CCF) Gas Cost (G1CL): 182 CCF x $0.6034 $109.82 Your average daily usage was 6.07 CCF GCA (G1CL): 182 CCF x $-0.17 $30.94 CR City Sales Tax: 2.5% X $130.34 $3.26 County Sales Tax: 1.23% X $130.34 $1.60 State Sales Tax: 2.9% X $130.34 $3.78 BullSheet Federal SuperTax: 2.9% X $130.34 $3.78 PPRTA Tax: 1% X $130.34 $1.30 - Smell a rotten egg odor at your business? You may have a natural gas leak. Leave the premise immediately, then call 9-1-1. Emergency crews will respond. Total charge this service $140.28'; preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0); // Print the entire match result var_dump($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