manual/en/features.cookies.php
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| 1 | ## Cookies | |
| 2 | ||
| 3 | 1 | 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()](https://www.php.net/manual/en/function.setcookie.php) or [setrawcookie()](https://www.php.net/manual/en/function.setrawcookie.php) function. Cookies are part of the HTTP header, so [setcookie()](https://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()](https://www.php.net/manual/en/function.header.php) has. You can use the [output buffering functions](https://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. |
| 4 | 2 | |
| 5 | 3 | Any cookies sent to server from the client will automatically be included into a [$\_COOKIE](https://www.php.net/manual/en/reserved.variables.cookies.php) auto-global array if [variables\_order](https://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. |
| 6 | 4 | |
| 7 | 5 | For more details, including notes on browser bugs, see the [setcookie()](https://www.php.net/manual/en/function.setcookie.php) and [setrawcookie()](https://www.php.net/manual/en/function.setrawcookie.php) function. |