isset

Cookies were invented to allow webmaster’s to store information about the user and their visit or other information on the user’s computer. Cookies are not privacy risk. All of the “trustworthy” websites use cookies.

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isset — Determine whether a variable is set or not! Returns TRUE if var exists; FALSE otherwise. If a variable has been unset with unset(), it will no longer be set. isset() will return FALSE if testing a variable that has been set to NULL. isset() only works with variables as passing anything else will […]

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PHP – Sessions

by Hiroshi on June 23, 2008

in isset, Sessions

Session support in PHP consists of a way to preserve certain data across subsequent accesses. This enables you to build more customized applications and increase the appeal of your web site. A visitor accessing your web site is assigned a unique id, the session id. This is either stored in a cookie on the user […]

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