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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.
PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.
PHP transparently supports HTTP cookies. Cookies are a mechanism for storing data in the remote browser and thus tracking or identifying return users. You can set cookies using the setcookie() or setrawcookie() function. Cookies are part of the HTTP header, so setcookie() must be called before any output is sent to the browser. This is the same limitation that header() has. You can use the output buffering functions to delay the script output until you have decided whether or not to set any cookies or send any headers.
Any cookies sent to you from the client will automatically be included into a $_COOKIE auto-global array if variables_order contains "C". If you wish to assign multiple values to a single cookie, just add [] to the cookie name.
Depending on register_globals,
regular PHP variables can be created from cookies. However it's not
recommended to rely on them as this feature is often turned off for the
sake of security.
$HTTP_COOKIE_VARS is also set in earlier versions of PHP
when the track_vars configuration
variable is set. (This setting is always on since PHP 4.0.3.)
For more details, including notes on browser bugs, see the setcookie() and setrawcookie() function.
Another Useful functions:
migration4.cookies | function.soap-soapclient-setcookie | function.setrawcookie | function.setcookie | function.session-set-cookie-params | function.session-get-cookie-params | function.httprequest-setcookies | function.httprequest-resetcookies | function.httprequest-getresponsecookies | function.httprequest-getcookies | function.httprequest-enablecookies | function.httprequest-addcookies | function.http-parse-cookie | function.http-build-cookie | features.cookies |
PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.