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

/
/
gmis

Test String

Code Generator

Language

Generated Code

$re = '/^(?=.*\bB1\b)(?=.*\bB2\b)(?=.*\bB3\b)(?=.*\bB4\b)(?=.*\bB5\b)(?:.*?[.?!](?: |$)){10}.*/mis'; $str = 'Lorem ipsum dolor sit amet consectetur adipiscing elit b3. Ex sapien vitae pellentesque sem placerat in id. Pretium tellus duis convallis tempus leo eu aenean. Urna tempor pulvinar vivamus fringilla lacus nec metus. Iaculis massa nisl malesuada lacinia integer nunc posuere. (B1) Semper vel class aptent taciti (B4 - duis tellus id) sociosqu ad litora. Conubia nostra inceptos himenaeos orci varius natoque penatibus. Dis parturient montes nascetur ridiculus mus donec rhoncus. Nulla molestie mattis scelerisque maximus eget fermentum odio. Purus est efficitur laoreet mauris pharetra vestibulum fusce (b2) sfnj B5.'; preg_match_all($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