this ppt contain introduction about cookies, cURL and session

1. PHP
(Cookies, cURL, Session,)

2. Setting a Cookie
setcookie("user", "Tom", time() + 86400, "/"); // check syntax for function params
• Creates a cookie with name user
• (Optional) Value of the cookie is Tom
• (Optional) Cookie will expire in 1 day (86400 seconds) (Optional) Cookie is available
throughout the whole website /
• (Optional) Cookie is only sent over HTTPS
• (Optional) Cookie is not accessible to scripting languages such as JavaScript

3. Checking if a Cookie is Set
if (isset($_COOKIE['user'])) { // true, cookie is set
echo 'User is ' . $_COOKIE['user'];
}else { // false, cookie is not set
echo 'User is not logged in';
}

4. Removing a Cookie
setcookie('user', '', time() - 3600, '/');
Or
unset($_COOKIE['user']);

5. Retrieving a Cookie
echo $_COOKIE['user'];

6. cURL
is a tool for transferring data with URL syntax. It support HTTP,
FTP, etc

7. a little script check is the cURL extension loaded or not
if(!extension_loaded("curl")) {
die("cURL extension not loaded! Quit Now.");
}
// Actual script start //
create a new cURL resource //
$curl is the handle of the resource
$curl = curl_init();
// set the URL and other options
curl_setopt($curl, CURLOPT_URL,"http://www.example.com");
// execute and pass the result to browser
curl_exec($curl); // close the cURL resource
curl_close($curl);

8. Session
data accessible across the various pages of an entire
website is to use a PHP Session

9. • Start session
session_start();
$_SESSION[user'] = ‘gptUser123’;
• Destroying Session
unset($_SESSION['counter']);
session_destroy();

10. ?
1. what id diff b/w session and cookie
2. where you use cookie
3. what is the use of session in your web page
4. have you know any cURL equal method