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

$re = '/^(.*)%%sql\s+-o\s+(\w+)\s+(\-([n|q|r])(\s+[a-z0-9]+)?)?\s?(\\\\n)?\s?select\s+(.+)\s+from([\w\s\.\-\'\"=]+)(\\\\n)?(.*)$/m'; $str = '\\n//something \\nimport com.adobe.platform.dataset.DataSetOptions\\n\\nvar df1 = spark.read.format(\\"com.adobe.platform.dataset\\")\\n .option(DataSetOptions.orgId, \\"310C6D375BA5248F0A494212@AdobeOrg\\")\\n .option(DataSetOptions.batchId, \\"dbe154d3-197a-4e6c-80f8-9b7025eea2b9\\")\\n .load(\\"5e68141134492718af974844\\")\\n\\ndf1.printSchema()\\ndf1.show()\\n// this should be changed\\n%%sql -o df -n 30 \\nselect * from sparkdf where sparkdf.x=\'something\'\\n// # and this line not\\n \\n\\n//import com.adobe.platform.dataset.DataSetOptions\\n\\nvar userToken = spark.sparkContext.getConf.getOption(\\"spark.yarn.appMasterEnv.USER_TOKEN\\").get\\nvar serviceToken = spark.sparkContext.getConf.getOption(\\"spark.yarn.appMasterEnv.SERVICE_TOKEN\\").get\\nvar serviceApiKey = spark.sparkContext.getConf.getOption(\\"spark.yarn.appMasterEnv.SERVICE_API_KEY\\").get\\n\\ndf1.write.format(\\"com.adobe.platform.dataset\\")\\n .option(DataSetOptions.orgId, \\"310C6D375BA5248F0A494212@AdobeOrg\\")\\n .option(DataSetOptions.userToken, userToken)\\n .option(DataSetOptions.serviceToken, serviceToken)\\n .option(DataSetOptions.serviceApiKey, serviceApiKey)\\n .save(\\"5e68141134492718af974844\\")\\n// \\n\\n//end '; preg_match_all($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