Saturday, 24 June 2017
What is a Cookie in PHP | Softcrayons IT Training Tutorial
A cookie is a small file that the server embeds on the user’s
computer. Each time the same computer requests a page with a browser, it
will send the cookie too. With PHP, you can both create and retrieve
cookie values.
A cookie is created with the setcookie() function.
Now we learn how to create and retrieve Cookie
This example creates a cookie named “user” with the value “John Doe”.
The cookie will expire after 30 days (86400 * 30). The “/” means that
the cookie is available in entire website (otherwise, select the
directory you prefer).
We then retrieve the value of the cookie “user” (using the global variable $_COOKIE). We also use the isset() function to find out if the cookie is set:
<?php
$cookie_name = “user”;
$cookie_value = “John Doe”;
setcookie($cookie_name, $cookie_value, time() + (86400 * 30), “/”); // 86400 = 1 day
?>
<html>
<body>
<?php
if(!isset($_COOKIE[$cookie_name])) {
echo “Cookie named ‘” . $cookie_name . “‘ is not set!”;
} else {
echo “Cookie ‘” . $cookie_name . “‘ is set!<br>”;
echo “Value is: ” . $_COOKIE[$cookie_name];
}
?>
</body>
</html>
You will get the out out of this
Cookie named ‘user’ is not set!
Note: You might have to reload the page to see the value of the cookie.
What is a Cookie in PHP | Softcrayons IT Training Tutorial
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