لطفا منتظر باشید ...
Summary
In this chapter, you learned about the two main methods of creatingpersistent variables—those variables that continue to exist from page
to page in PHP. The first stores the variable in the visitor’s browser
in the form of a cookie. By default, cookies terminate
at the end of the browser session, but by specifying an expiry time, they
can be preserved indefinitely. Unfortunately, cookies are fairly unreliable
because you have no way of knowing when the browser might delete your cookies,
and because some users configure their browsers to disable cookies. Obviously,
cookies are not something that should be relied upon.Sessions, on the other hand, free you from all
the limitations of cookies. They don’t rely on cookies to work, and
they let you store an unlimited number of potentially large variables. Sessions
are an essential building block in modern ecommerce applications, as we demonstrated
in our simple shopping cart example.
