Tools, FAQ, Tutorials:
Cookies Encoded during Transportation in PHP
How Are Cookies Encoded During Transportation in PHP?
✍: FYIcenter.com
When cookies are transported from servers to browsers and from browsers back to servers, Cookies values are always encoded using the URL encoding standard to ensure that they are transported accurately. But you don't need to worry about the encoding and decoding processes yourself. PHP engine will automatically encode cookies created by setcookie(), and decode cookies in the $_COOKIE array. The tutorial exercise will help you understand this concept better.
Write a sample PHP script, encoding_cookies.php, like this:
<?php setcookie("Letters", "FYICenter"); setcookie("Symbols", "A~!@#%^&*(), -_=+[]{};:'\"/?<>."); setcookie("Latin1", "\xE6\xE7\xE8\xE9\xA5\xA9\xF7\xFC"); print("<pre>\n"); $count = count($_COOKIE); print("$count cookies received.\n"); foreach ($_COOKIE as $name => $value) { print " $name = $value\n"; } print("</pre>\n"); ?>
First, run this script off-line in a command window:
>php-cgi encoding_cookies.php Content-type: text/html X-Powered-By: PHP/5.0.4 Set-Cookie: Letters=FYICenter Set-Cookie: Symbols=A%7E%21%40%23%25%5E%26%2A%28%29%2C +-_%3D%2B%5B%5D%7B%7D%3B%3A%27%22%2F%3F%3C%3E. Set-Cookie: Latin1=%E6%E7%E8%E9%A5%A9%F7%FC <pre> 0 cookies received. </pre>
You see how cookie values are encoded now. Then copy the script, encoding_cookies.php to the Web server, and run it with a browser. You will get:
3 cookies received. Letters = FYICenter Symbols = A~!@#%^&*(), -_=+[]{};:\'\"/?.<> Latin1 = 稨饩
This shows that the values in the $_COOKIE array are already decoded.
⇒ Malicious Website Stealing Cookies in PHP
⇐ Single Cookie Size Limit in PHP
2016-10-29, 1377👍, 0💬
Popular Posts:
Where to find tutorials on OpenID? Here is a large collection of tutorials to answer many frequently...
How to add images to my EPUB books Images can be added into book content using the XHTML "img" eleme...
Can Multiple Paragraphs Be Included in a List Item? Yes. You can include multiple paragraphs in a si...
How to use the "set-backend-service" Policy Statement for an Azure API service operation? The "set-b...
How to login to Azure API Management Publisher Portal 2017 version? If you have given access permiss...