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

/
/
gis

Test String

Code Generator

Language

Generated Code

$re = '/^(?:[[:^print:][:cntrl:]\s]|GIF89.{0,20})*(?:<[^>]+>\s*)+<title>contador\s*de \s*acessos<\/title>.{0,1350}?\$caminho\s*=\s*"contador\.txt.{0,150}?\$arquivo\s*=\s*fopen\(\$caminho.{0,150}?numero\s*de\s*visitas\s*fclose\(\$arquivo.{0,650}?<meta.{0,50}?url=[\'"]contador\.php.{0,50}?\/html[[:punct:]\s]+$/is'; $str = '<html> <head> <title>Contador de Acessos</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><style type="text/css"> <!-- body,td,th { color: #FF0000; font-family: Verdana; font-size: 12px; } body { background-color: #CCCCCC; } .style1 { font-size: 15px; font-weight: bold; } .style2 { font-size: 12px; color: #FF0000; } .style3 { font-size: 15px; color: #000000; } .style4 {color: #000000} .style5 {font-size: 15px; font-weight: bold; color: #000000; } .style8 {font-size: 24px; font-weight: bold; } .style9 {color: #CCCCCC} .style11 {color: #FF0000} .style12 {color: #FFFFFF} .style15 {color: #FFFFFF; font-size: 20px; } --> </style><body link="#FF0000" vlink="#FF0000" alink="#FF0000"> <center> <table width="476" border="0"> <tr> <td width="470" bgcolor="#000000"><div align="center"><span class="style15"> CONTADOR - <span class="style11">BB</span></span> </div></td> </tr> </table> <p><span class="style5"> $$ CONTADOR DE ACESSOS $$ <br> <br> <span class="style2">==========================================================</span><br> </span><br> <span class="style4">VOC&Ecirc; POSSUI<span class="style9">-</span> </span> </h1> <span class="style8"> <?php $caminho = "contador.txt";//nome do arquivo que vai guardar os visitantes $arquivo = fopen($caminho, "r");//abre o arquivo $total = fgets($arquivo,1024); //pega o numero de visitas fclose($arquivo);//fecha o arquivo $x = $total; echo "" . $x;//mostra na tela o numero de visitantes ?> </span> <span class="style4"> CLIQUES.</span> <br> <br> <br> <br> <span class="style4"><strong>OBS:</strong> A P&Aacute;GINA FICA ATUALIZANDO AUTOMATICAMENTE EM 60 SEGUNDOS. </span></p> <table width="568" border="0"> <tr> <td bgcolor="#000000"><div align="center"><span class="style12">CONTADOR SPAM<span class="style11"></span></span></div></td> </tr> </table> <p><br> </p> <meta http-equiv=\'Refresh\' content=\'60\'; URL=\'contador.php\'> </center> </body> </head> </html>'; preg_match_all($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