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

/
/
i

Test String

Code Generator

Language

Generated Code

$re = '/(https?:\/\/.*\.(?:png|jpg))/i'; $str = ' "<div id=\\"node-3514\\" class=\\"node node-pepite-tech node-promoted clearfix\\">\\n\\n \\n <h2><a href=\\"/startup-de-la-french-tech/beeleev\\">Beeleev</a></h2>\\n \\n \\n <div class=\\"content\\">\\n <div class=\\"field field-name-field-screenshot field-type-image field-label-hidden\\"><div class=\\"field-items\\"><div class=\\"field-item even\\">https://www.lespepitestech.s3-eu-west-1.amazonaws.com/s3fs-public/styles/large/public/beeleev.png?itok=zTcdZQQX</div></div></div> </div>\\n\\n <ul class=\\"links inline\\"><li class=\\"comment_forbidden first last\\"><span><a href=\\"/se-connecter?destination=node/3514%23comment-form\\">Connectez-vous</a> ou <a href=\\"/creer-un-compte?destination=node/3514%23comment-form\\">inscrivez-vous</a> pour publier un commentaire</span></li>\\n</ul>\\n \\n</div>\\n"'; preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0); // Print the entire match result var_dump($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