<?php // RAY_cookie_example.phperror_reporting(E_ALL);// RECEIVE FORM INPUT AND SET A COOKIE WITH THE NAME, VALUE AND LIFE FROM THE FORM// MAN PAGE: http://php.net/manual/en/function.setcookie.php// TO SEE COOKIES IN FIREFOX, FOLLOW SOMETHING LIKE TOOLS => OPTIONS => PRIVACY => SHOW COOKIES (OR "REMOVE INDIVIDUAL")// REQUIRED AT PHP 5+date_default_timezone_set('America/New_York');// IF THE FORM HAS BEEN POSTEDif (!empty($_POST)){    // TIDY UP THE POST INPUT - CLEAN AND NOT MORE THAN 16 BYTES    $name = substr(clean_string($_POST["name"]),0,16);    $data = substr(clean_string($_POST["data"]),0,16);    $life = clean_number($_POST["life"]);    // BE SURE WE HAVE USEFUL INFORMATION    if ( ($name == '') || ($data == '') ) die("MISSING INPUT: PLEASE <a href="{$_SERVER['PHP_SELF']}">TRY AGAIN</a>");    // CHOOSE THE COOKIE NAME, VALUE, AND LIFE IN SECONDS    $cookie_name    = $name;    $cookie_value   = $data;    $cookie_life    = $life;    // CONFIGURE THE COOKIE LIFE    if ($life == 0)    {        // USE THIS TO MAKE COOKIE EXPIRE AT END OF BROWSER LIFE        $cookie_expires = 0;    }    else    {        // USE THIS TO MAKE A PERSISTENT COOKIE        $cookie_expires = time() + $cookie_life;    }    // MAKE THE COOKIE AVAILABLE TO ALL DIRECTORY PATHS    $cookie_path	= DIRECTORY_SEPARATOR;    // MAKE THE COOKIE AVAILABLE TO ALL SUBDOMAINS - DOMAIN NAME STARTS WITH DOT AND OMITS WWW (OR OTHER SUBDOMAINS).    $x = explode('.', strtolower($_SERVER["HTTP_HOST"]));    $y = count($x);    if ($y == 1) // MAYBE 'localhost'?    {        $cookie_domain = $x[0];    }    else // SOMETHING LIKE 'www2.atf70.whitehouse.gov'?    {        // USE THE LAST TWO POSITIONS TO MAKE THE HOST DOMAIN        $cookie_domain = '.' . $x[$y-2] . '.' . $x[$y-1];    }    // MAKE THE COOKIE AVAILABLE TO HTTP, NOT JUST HTTPS    $cookie_secure    = FALSE;    // HIDE COOKIE FROM JAVASCRIPT (PHP 5.2+)    $cookie_http      = TRUE;    // SET THE COOKIE    if ( setcookie         ( $cookie_name         , $cookie_value         , $cookie_expires         , $cookie_path         , $cookie_domain         , $cookie_secure         , $cookie_http         )       )    {        echo PHP_EOL . "<br/>SUCCESS!  THE COOKIE HAS BEEN SET AND WILL BE AVAILABLE TO THE NEXT PAGE LOAD";    }    else    {        echo PHP_EOL . "<br/>FAILURE!  THE COOKIE WAS NOT SET AS EXPECTED";    }    // AT THIS POINT, THE COOKIE HAS BEEN SET, BUT IT IS NOT AVAILABLE IN THIS SCRIPT    // THE COOKIE WILL NOT BE RETURNED FROM THE CLIENT TO THE SERVER UNTIL THE NEXT HTTP REQUEST    // THIS IS BECAUSE THE BROWSER SENDS THE COOKIE TO OUR SCRIPT BEFORE OUR SCRIPT STARTS RUNNING    echo '<pre>';    echo PHP_EOL . '$_COOKIE CONTAINS '; var_dump($_COOKIE);    echo PHP_EOL . '$_POST CONTAINS ';   var_dump($_POST);    echo PHP_EOL . 'THE COOKIE HAS BEEN SET WITH THESE VALUES: ';    echo PHP_EOL . 'COOKIE NAME:    ' . $cookie_name;    echo PHP_EOL . 'COOKIE VALUE:   ' . $cookie_value;    echo PHP_EOL . 'COOKIE EXPIRES: ' . number_format($cookie_expires) . " == " . date('r', $cookie_expires);    echo PHP_EOL . 'COOKIE PATH:    ' . $cookie_path;    echo PHP_EOL . 'COOKIE DOMAIN:  ' . $cookie_domain;    echo PHP_EOL . 'COOKIE SECURE:  '; var_dump($cookie_secure);    echo           'COOKIE HTTP:    '; var_dump($cookie_http);    echo "</pre>";}// END OF SETTING THE COOKIE - CREATE THE FORM IN HEREDOC NOTATION$self = $_SERVER["PHP_SELF"];$form = <<<FORM<pre><form method="post">COOKIE NAME: <input name="name" /> STRINGCOOKIE DATA: <input name="data" /> STRINGCOOKIE LIFE: <input name="life" /> INTEGER SECONDS<input type="submit" /><b>TO SEE THE EXISTING COOKIES <a href="$self">CLICK HERE</a></b></form></pre>FORM;echo $form;// SHOW THE COOKIE ARRAY, IF ANYecho '<pre>$_COOKIE CONTAINS '; var_dump($_COOKIE); echo "</pre>";// UNRELATED FUNCTIONS TO TIDY UP FORM INPUTfunction clean_string($string){    return trim(preg_replace('/[^A-Z0-9_]/i', NULL, $string));}function clean_number($string){    return trim(preg_replace('/[^0-9]/i',     0,    $string));}// ACTIVATE THIS TO SHOW THE SCRIPT CODE// die( highlight_file(__FILE__, TRUE) );                                          

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