Please anybody tell me the diffrence between Session and cookie in PHP.

follow this link, you will get the answer and other stuff related to programming. You will get your ans too.
http://www.w3schools.com

anyway..

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.

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.

Thanks to give me answer.
What functions are used in Cookie?

Originally Posted by carol123

Thanks to give me answer.
What functions are used in Cookie?

Go here:

http://www.quirksmode.org/js/cookies.html

Cookie is an object. Session is a process. Cookie is an identifier stored on client. Session is used for storing data on server between client requests. Session identifier can be passed as cookie value or as GET/POST parameter (which in general is absolutely the same thing).

Hi There!

cookie is just a peace of information tht is stored on client machine permanently (as for as the user do not delete the cookie, or the cookie is not expire.).

Where session is a process that also keep some information (temporarly )about users and users machines. tht will retain untill user do not close the browser window.

This is the main diff according to my knowledge.

Qamar

OMG

"Where session is a process that also keep some information (temporarly )about users and users machines. tht will retain untill user do not close the browser window."

Physically session is represented with a file that is stored on the server's HDD. When you do session_start() in your script php engine checks for the cookie named after session_name() (which is by default PHPSESSID). If the cookie exists, php tries to find the corresponding file (called session file) and load variables from it. If the cookie does not exists, php creates new session file and sets the cookie. If you need to close the session you may simply unset the cookie which stores the session ID.

Session files are deleted automatically by php according to garbage collection settings. You can learn more about php garbage collection in php manual.

Considering what gammar said about "until user closes the browser window": since session is controlled by cookie you should set correct expiration time to your session cookies. Read the manual about setcookie() to learn how to set cookies which expire on browser window closing and how to set cookies that remain alive during the specified period of time. Settings are same for setcookie() and for session_set_cookie_params().

Without cookies, websites and their servers have no memory. A cookie, like a key, enables swift passage from one place to the next. Without a cookie every time you open a new web page the server where that page is stored will treat you like a completely new visitor.

Originally Posted by mtishetsky

OMG

"Where session is a process that also keep some information (temporarly )about users and users machines. tht will retain untill user do not close the browser window."

Physically session is represented with a file that is stored on the server's HDD. When you do session_start() in your script php engine checks for the cookie named after session_name() (which is by default PHPSESSID). If the cookie exists, php tries to find the corresponding file (called session file) and load variables from it. If the cookie does not exists, php creates new session file and sets the cookie. If you need to close the session you may simply unset the cookie which stores the session ID.

Session files are deleted automatically by php according to garbage collection settings. You can learn more about php garbage collection in php manual.

Considering what gammar said about "until user closes the browser window": since session is controlled by cookie you should set correct expiration time to your session cookies. Read the manual about setcookie() to learn how to set cookies which expire on browser window closing and how to set cookies that remain alive during the specified period of time. Settings are same for setcookie() and for session_set_cookie_params().

okay ...

session_start() is not a function ?

function is != method ?
method is ! = process ?

did not i mention that the information in cookie will be ramain as for as cookie not expire or user not delete it ? ?? ?

and when a user colose his/her browser window session not expire ? ? ??

wht is the logic behing session_start() function ? ? ??


Regards.
Qammar Feroz

The main use for cookies i see are logins to remember a user.

Cookies are stored in a client side and the sessions are stored in server side.