manual/en/features.cookies.php

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1- [HTTP authentication with PHP](http://www.php.net/manual/en/features.http-auth.php)
2- [Cookies](http://www.php.net/manual/en/features.cookies.php)
3- [Sessions](http://www.php.net/manual/en/features.sessions.php)
4- [Dealing with XForms](http://www.php.net/manual/en/features.xforms.php)
5- [Handling file uploads](http://www.php.net/manual/en/features.file-upload.php)
6- [Using remote files](http://www.php.net/manual/en/features.remote-files.php)
7- [Connection handling](http://www.php.net/manual/en/features.connection-handling.php)
8- [Persistent Database Connections](http://www.php.net/manual/en/features.persistent-connections.php)
9- [Safe Mode](http://www.php.net/manual/en/features.safe-mode.php)
10- [Using PHP from the command line](http://www.php.net/manual/en/features.commandline.php)
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112## Chapter 35. Cookies
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314PHP 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()**](http://www.php.net/manual/en/function.setcookie.php) or [**setrawcookie()**](http://www.php.net/manual/en/function.setrawcookie.php) function. Cookies are part of the HTTP header, so [**setcookie()**](http://www.php.net/manual/en/function.setcookie.php) must be called before any output is sent to the browser. This is the same limitation that [**header()**](http://www.php.net/manual/en/function.header.php) has. You can use the [output buffering functions](http://www.php.net/manual/en/ref.outcontrol.php) to delay the script output until you have decided whether or not to set any cookies or send any headers.
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516Any cookies sent to you from the client will automatically be included into a [$\_COOKIE](http://www.php.net/manual/en/reserved.variables.php) auto-global array if [variables\_order](http://www.php.net/manual/en/ini.core.php) contains "C". If you wish to assign multiple values to a single cookie, just add \[\] to the cookie name.
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