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

r"
"
gim

Test String

Code Generator

Language

Generated Code

$re = '/^PROC SQL;.*\n(?:(?!RUN;|QUIT;).*\n)*(?:RUN|QUIT);/im'; $str = 'kkkkk; select xx("xE\'", PUT(xx.xxxx.),"\'") jdfjhf:jhfjj from xxxx_x_xx_L ; quit; /* 1.xxxxx FROM xxxx_x_Ex_x */ proc sql; ("TRUuuuth"); hhhjhfjs as fdsjfsj: select * from djfkjd to jfkjs ( SELECT abc AS abc1, abc_2_ AS efg, abc_fg, fkdkfj_vv, jjsflkl_ff, fjkdsf_jfkj FROM &xxx..xxx_xxx_xxE where ((xxx(xx_ix as format \'xxxx-xx\') gff &jfjfsj_jfjfj.) and (xxx(xx_ix as format \'xxxx-xx\') lec &jgjsd_vnv.)) ); 1) jjjjjj; select xx("xE\'", PUT(xx.xxxx.),"\'") jdfjhf:jhfjj from xxxx_x_xx_L ; quit; /* 1.xxxxx FROM xxxx_x_Ex_x */ () PROC SQL; ("CUuuiiiiuth"); hhhjhfjs as fdsjfsj: select * from djfkjd to jfkjs (SELECT abc AS abc1, abc_2_ AS efg, abc_fg, fkdkfj_vv, jjsflkl_ff, fjkdsf_jfkj FROM &xxx..xxx_xxx_xxE where ((xxx(xx_ix as format \'xxxx-xx\') gff &jfjfsj_jfjfj.) and (xxx(xx_ix as format \'xxxx-xx\') lec &jgjsd_vnv.))(( )) ); 2)( RUN; ()) ------------ )'; preg_match_all($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