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 = '/(Max [^:]+): ([\d.]+)/'; $str = 'mps): 22.624001\\r\\nMax Phase Current Gain Error (Percent): 0.500000\\r\\nMax Phase Current Offset Error (Amps): 0.113120\\r\\nFan Control Timer (nS): 60000002048.000008\\r\\nPWM Dead Time (uS): 0.000004\\r\\n\\r\\n--------------------------AXIS_INSTANCE_3--------------------------\\r\\n\\r\\nPiccolo ServoIO Stats :\\r\\n\\tTotal Missed Read Phase : 0\\r\\n\\tTotal Missed Write Phase : 0\\r\\n\\tTotal Read CRC Error : 0\\r\\n\\tTotal Write CRC Error : 0\\r\\n\\tTotal Invalid Seq. ID : 0\\r\\n\\tTotal (General) Sequence Errors : 1\\r\\n\\r\\nOmap to Piccolo Read Packet :\\r\\nCommand/Fault Word : 0x0\\r\\nSequenceAndIncipSize : 0xc0\\r\\n\\r\\nOmap to Piccolo Read Packet :\\r\\nCommand/Fault Word : 0x0\\r\\nSequenceAndIncipSize : 0xc0\\r\\n\\r\\nPiccolo to Omap Read Packet :\\r\\nUPhase Current : 32779\\r\\nWPhase Current : 32776\\r\\nVbus : 0\\r\\n\\r\\nOmap to Piccolo Write Packet :\\r\\nUPhase Mod Idx : 0\\r\\nVPhase Mod Idx : 0\\r\\nWPhase Mod Idx : 0\\r\\n\\r\\nPiccolo to Omap Write Packet :\\r\\nStatus/Fault Word: 0x0\\r\\nSequenceAndIncipSize: 0x70\\r\\n\\r\\n\\r\\nPiccolo to Omap Low-Speed Data :\\r\\nPiccolo ADC Temp : 0.000000 degC\\r\\nPiccolo Igbt Temp : 23.618481 degC\\r\\n\\r\\nPower Interface Scaling:\\r\\nPhase Current Feedback Offset Counts: 32767.000000\\r\\nPhase Current Feedback Gain Scaling: -0.002142\\r\\nDC Bus Voltage Feedback Offset Counts: 0.000000\\r\\nDC Bus Voltage Feedback Gain Scaling: 0.013757\\r\\nMax Phase Current (Amps): 609.198303\\r\\nPhase Current Gain Error Measurement Point (Amps): 22.624001\\r\\nMax Phase Current Gain Error (Percent): 0.500000\\r\\nMax Phase Current Offset Error (Amps): 0.113120\\r\\nFan Cont '; preg_match_all($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