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

/
/
gm

Test String

Code Generator

Language

Generated Code

$re = '/ACPOWER":"([\d\.]+)/m'; $str = '{"UPTIME":"00d 00:45:26","RSSI":96,"VERSION":"1.10 04.05.2023 06:16","DEVICENAME":"T2SG8BBF6C","STATICIP":"192.168.88.68","STATICGW":"192.168.88.1","STATICSN":"255.255.255.0","VGRID":236.8,"VBAT":25.6,"SETACPOWER":700,"TEMP":42,"DAC":23637,"CALSTEP":0,"MAXPOWER":"700","POWERLIMIT":700,"VBATCUTOFF":24,"VBATREBOOT":24.5,"SUN2IP":"","SUN3IP":"","SUN2ROUNDTRIP":"0","SUN2SETPOINT":0,"SUN2POWERLIMIT":0,"SUN3ROUNDTRIP":"0","SUN3SETPOINT":0,"SUN3POWERLIMIT":0,"METERURL":"http://192.168.88.57/status","METER_USER":"admin","METER_PASS":"","JSONKEYS":"total_power","METERINTERVAL":"500","METERREADOUT":142,"ZEPCTARGET":"15","ZEPCAVERAGE":"20","MQTT_SERVER":"","MQTT_PORT":"1883","MQTT_USER":"","MQTT_PASS":"","HADISCOVERY":0,"MQTT_ACSETPOINTOVR_NAME":"T2SG8BBF6C/ACSETPOINTOVR","MQTT_ACSETPOINTOVR_VALUE":"","MQTT_DACOVR_NAME":"T2SG8BBF6C/DACOVR","MQTT_DACOVR_VALUE":"","MQTT_CALSTEPOVR_NAME":"T2SG8BBF6C/CALSTEPOVR","MQTT_CALSTEPOVR_VALUE":"","MQTT_METEROVR_NAME":"T2SG8BBF6C/METEROVR","MQTT_METEROVR_VALUE":"","MQTT_MAXPOWEROVR_NAME":"T2SG8BBF6C/MAXPOWEROVR","MQTT_MAXPOWEROVR_VALUE":"","MQTT_TARGETOVR_NAME":"T2SG8BBF6C/TARGETOVR","MQTT_TARGETOVR_VALUE":"","MQTT_ACSETPOINT_NAME":"T2SG8BBF6C/ACSETPOINT","MQTT_ACSETPOINT_VALUE":7000,"MQTT_ACDISPLAY_NAME":"T2SG8BBF6C/ACDISPLAY","MQTT_ACDISPLAY_VALUE":7211,"MQTT_VGRID_NAME":"T2SG8BBF6C/VGRID","MQTT_VGRID_VALUE":2368,"MQTT_VBAT_NAME":"T2SG8BBF6C/VBAT","MQTT_VBAT_VALUE":256,"MQTT_DAC_NAME":"T2SG8BBF6C/DAC","MQTT_DAC_VALUE":23637,"MQTT_CALSTEP_NAME":"T2SG8BBF6C/CALSTEP","MQTT_CALSTEP_VALUE":0,"MQTT_TEMPERATURE_NAME":"T2SG8BBF6C/TEMPERATURE","MQTT_TEMPERATURE_VALUE":42,"MQTT_METER_NAME":"T2SG8BBF6C/METER","MQTT_METER_VALUE":"2963.35","MQTT":"not set","ACPOWER":"721.10 W","ACPOWERSUN2":"not set","ACPOWERSUN3":"not set","METERPOWER":"2963.35 W","ZEPCPOWER":"2083.90 W"}'; preg_match_all($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