php如何将字符串转换为变量

Question

In PHP I am creating a table where I have inserted an input box and it is named as A,B,C,D,E,.....,Z (Caps) .

Now I have to fetch the data inserted in that particular input box. Is there any way I can convert string A,B,C,D,E.... into a variable?

Keep in mind the data inserted into the input box should be fetched.

Answer 1

Whatever is the question, you can surely use $_REQUEST["whatever"] .

This is perfect for you at this stage, as data are always available with it, no matter the scope

In most cases, it is also very bad for security, as it allow special crafted xss , session cookie hijacking , sql injection , and more fun stuffs.

From my view , it is very good to play with it now , and see what are the differences with $_GET , or $_POST .

$_REQUEST This is a 'superglobal', or automatic global, variable. This simply means that it is available in all scopes throughout a script. There is no need to do global $variable; to access it within functions or methods.

The variables in $_REQUEST are provided to the script via the GET, POST, and COOKIE input mechanisms and therefore could be modified by the remote user and cannot be trusted .

http://php.net/manual/en/reserved.variables.request.php