Get and post,session and cookie
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This document discusses GET and POST methods, as well as sessions and cookies. The GET method sends form data in the URL query string, while POST sends data invisibly. GET has limits on data size and isn't secure for passwords, while POST can handle sensitive data and larger sizes. Sessions use server-side storage to identify users across pages. Cookies use client-side storage to identify users across browser sessions. Sessions are lost when the browser closes, while cookies persist but only store strings.
![Session
Starting php session
Session_start()
Storing a session variable
$_SESSION['intUserId']=$arrUser['pk_int_user_id'];//set session variable
Accessing a session variable
$user_id=$_SESSION['intUserId'];
Destroying a session variable
1. Unset($_SESSION[‘intUserId’])
2. Session_destroy()](https://image.slidesharecdn.com/getandpostsessionandcookie-140726005543-phpapp02/85/Get-and-post-session-and-cookie-12-320.jpg)
![Cookie
Create cookie
setcookie("intUserId",$intValue,time()+600);//create cookie variable
Access cookie
$intUserId=$_COOKIE['intUserId'];
Unset cookie
setcookie("intUserId", "", time()-600);//unset cookie](https://image.slidesharecdn.com/getandpostsessionandcookie-140726005543-phpapp02/85/Get-and-post-session-and-cookie-14-320.jpg)
Get and post,session and cookie
- 3. Disclaimer: This presentation is prepared by trainees of baabtra as a part of mentoring program. This is not official document of baabtra –Mentoring Partner Baabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd
- 4. GET & POST • 2 methods • Form data sent from client to server
- 5. GET method
- 6. GET method • The data send along the query string <form action=“registration.php” method=“get”> • $_GET function is used to collect values in a form with method=“get". • Can seen in the url • Can be bookmarked • Not suitable for sending password or sensitive data • Cant send values exceeding 2000 characters
- 7. POST method
- 8. POST method • $_POST function is used to collect values in a form with method="post". <form action=“registration” method=“post”> • Invisible in url • Cant be bookmarked • Suitable for sending sensitive data • 8 mb size by default
- 9. GET & POST GET • Seen in url • Can be bookmarked • Not suitable for sending sensitive data • Max size=2000 characters POST • Invisible in url • Cant bookmarked • Suitable for sending sensitive data • Max size=8 mb
- 10. Session &Cookie • Used to maintain the states of http request
- 11. Session • A PHP session variable is used to store information about, or change settings for a user session. • Session variables hold information about one single user, and are available to all pages in one application.
- 12. Session Starting php session Session_start() Storing a session variable $_SESSION['intUserId']=$arrUser['pk_int_user_id'];//set session variable Accessing a session variable $user_id=$_SESSION['intUserId']; Destroying a session variable 1. Unset($_SESSION[‘intUserId’]) 2. Session_destroy()
- 13. Cookie • A cookie is often used to identify a user. • A cookie is a small file that the server embeds on the user's computer. • Each time the same computer requests a page with a browser, it will send the cookie too.
- 14. Cookie Create cookie setcookie("intUserId",$intValue,time()+600);//create cookie variable Access cookie $intUserId=$_COOKIE['intUserId']; Unset cookie setcookie("intUserId", "", time()-600);//unset cookie
- 15. Session &Cookie Session • Stored in server • Lost when browser close • Store string and object • Use future reference cookie • Stored in browser • Don’t lose when browser close • Only store string • Cant use
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