<![CDATA[---------------------------------------------------
| Date: 2003-06-22 14:19:41 |
| Filename: cookie.php |
| Author: detour@metalshell.com |
| |
| http://www.metalshell.com/ |
---------------------------------------------------
<?php
/* cookie.php by detour@metalshell.com
*
* Example on storing cookies in the client's browser.
* You will notice that I do not let the browser determine
* when the cookie will expire, the reason for doing this
* is becuase often clocks are wrong on either the clients machine
* or sometimes the server. By setting a cookie value with the
* local server time and then comparing it each time the cookie
* is read will avoid this, allowing the expire time to be much
* more accurate.
*
* http://www.metalshell.com/
*
*/
// Expire in 60 seconds
$expire_time = 60;
if($_COOKIE["mycookie"]) {
// Convert the string back into an array.
$cook = unserialize(stripslashes($_COOKIE["mycookie"]));
// Print out each value.
foreach($cook as $key => $value)
print "$key: $value<br>";
/* Compare the time the cookie was set with the current time, and
if it has expired tell the client it expired a week ago so that
it can erase it. */
if(time() - $cook["expire"] >= $expire_time) {
print "<h3>Cookie set to expire.</h3>";
setcookie("mycookie", "clearing", time()-60*60*24*7);
}
// Seconds left till the cookie expires.
print "Seconds left: " . ($expire_time - (time() - $cook["expire"])) . "<br>";
} else {
print "Setting cookie.";
// Build an array to store on the clients browser.
$cookieset["fish"] = "trout";
$cookieset["dog"] = "hound";
$cookieset["cat"] = "cheetah";
$cookieset["expire"] = time();
/* Serialize will turn an array into a string so that it can later be turned
back into an array by using unserialize. The serialize output is something
like:
a:4:{s:4:"fish";s:5:"trout";s:3:"dog";s:5:"hound";s:3:"cat";...}
This is very handy because it allows you to store multiple values in one,
cookie making things a little cleaner. */
/* Set the cookie to expire in one week, you would need to raise this if you
set $expire_time to greater then a week. */
setcookie("mycookie", addslashes(serialize($cookieset)), time()+60*60*24*7);
}
?>
]]></plaintext></body>