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  Tutorial: PHP Cookies and Sessions Cookies Tutorial

Learn how to add and play around with cookies.

Tutorial Details:

PHP Cookies and Sessions Cookies Tutorial
Setting and playing around with cookies is a fun and useful way to save data on a user's hard drive, and can successfully store valuable information which may be helpful the next time they come to the site. Its fairly simple to set up, and even easier to read. To use it, you have to remember some guidelines: You have to put the cookie code as the first line of your file, it has to be before the head, before any other code, HTML or PHP.

The cookie will not work on the page until its refreshed, or the user visits the page again. The cookie only works on the directory you're in and down. Its best to place the cookie in a file which is located in the root directory, so you can use the cookie anywhere around the site. Here's the code to set a variable:
<?
setcookie ("cookie", "spoono rocks");
//makes a variable $cookie with a value of "spoono rocks"
?>

Now, the next time someone visits this page, or any other PHP page in the same directory, or a sub directory inside, the cooie variable will already be defined. If you echo out $_COOKIE["cookie"], it will display "spoono rocks". Moving on, if you want to set a time on this cookie to expire after a a given time, just put it as the next field, with the amount of time you want it to last till in seconds.


 

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