manual/en/features.cookies.php
20020805_rev01 · COMPARED WITH 20011225_rev01 · ARCHIVE SNAPSHOT, DATE APPROXIMATE
Full text changes — 20011225_rev01 to 20020805_rev01
| 1 | ## Chapter 18. Cookies | |
| 1 | ## Chapter 19. Cookies | |
| 2 | 2 | |
| 3 | 3 | 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://php.net/manual/en/function.setcookie.php) function. Cookies are part of the HTTP header, so [**setcookie()**](https://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://php.net/manual/en/function.header.php) has. You can use the [output buffering functions](https://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 | 4 | |
| 5 | 5 | Any cookies sent to you from the client will automatically be turned into a PHP variable just like GET and POST method data, depending on the register\_globals and variables\_order configuration variables. If you wish to assign multiple values to a single cookie, just add _\[\]_ to the cookie name. |
| 6 | 6 | |
| 7 | 7 | In PHP 4.1.0 and later, the $\_COOKIE auto-global array will always be set with any cookies sent from the client. $HTTP\_COOKIE\_VARS is also set in earlier versions of PHP when the track\_vars configuration variable is set. |
| 8 | 8 | |
| 9 | 9 | For more details, including notes on browser bugs, see the [**setcookie()**](https://php.net/manual/en/function.setcookie.php) function. |
| 10 | ||
| 11 | <table><tbody><tr><td><small>User Contributed Notes<br></small><b>Cookies</b><br></td><td><a href="https://php.net/manual/add-note.php?sect=features.cookies&redirect=http://download.php.net/manual/en/features.cookies.php"><img src="https://php.net/gifs/notes-add.gif" width="13" height="13" alt="add a note"></a> <a href="https://php.net/manual/about-notes.php"><img src="https://php.net/gifs/notes-about.gif" width="13" height="13" alt="about notes"></a><br></td></tr><tr><td colspan="2"><a name="#11858"></a><table><tbody><tr><td><a href="mailto:yasuo_ohgaki@hotmail.com">yasuo_ohgaki@hotmail.com</a><br>09-Mar-2001 07:58</td><td><br></td></tr><tr><td colspan="2"><tt>It might be good idea that manual mentions related standard<br>(RFC2965,RFC2109 for cookie, Netscape's cookie spec also) and URL for the<br>standard.<p>Following link is for cookie definitions:<br>http://portal.research.bell-labs.com/~dmk/cookie.html</p><p>It seems many users do not read standard definitions, unfortunately. Manual<br>may need to be written to encourage users to read related standards.</p></tt><br></td></tr></tbody></table></td></tr><tr><td colspan="2"><a href="https://php.net/manual/add-note.php?sect=features.cookies&redirect=http://download.php.net/manual/en/features.cookies.php"><img src="https://php.net/gifs/notes-add.gif" width="13" height="13" alt="add a note"></a> <a href="https://php.net/manual/about-notes.php"><img src="https://php.net/gifs/notes-about.gif" width="13" height="13" alt="about notes"></a><br></td></tr></tbody></table> |