'?' in php

isset($_COOKIE[""])) ? $_COOKIE[""]+2 : 0;

Can others please translate what this says? I don't know what '?' question mark with this means in PHP. Thanks a lot.

 

I know this is, isset($_COOKIE[""])) check to see if cookie is set.

I don't know what the rest of this with it means after searching everywhere. Thank you.

 

check again your code. i think no "?" in this coding. and this is wrong

 

isset($_COOKIE[""])) ? $_COOKIE[""]+2 : 0;

PHP:

All I said was what does this mean? It does something, I just want to know what it means by you that know PHP code. Because I'm trying to understand what it means so I know if I still need it. I'm only asking something easy, what does it mean? Thank you very much for your help.

 

It is the ternary condition operator, read about it here: http://php.net/manual/en/language.expressions.php

 

Hi,

When you're not used to it, it can look quite odd..

using this code as an example:

$var = "";
echo (trim($var)=="") ? "empty" : "not empty";
$var = "a";
echo (trim($var)=="") ? "empty" : "not empty";

Code (markup):

basically on the first pass, the $var is empty, the echo will output 'empty', on the next one it will output 'not empty'
thats a really simple view, it can be used for more complex functionality, as per your sample.

in your sample, there would be a cookie name in the double quotes that you've removed, lets call it VisitorCount for this example.

Assuming that the cookie has never been set, so perhaps a first visit
-> then 0 will be used or returned, depending upon the earlier part of the line that not shown.

Ok, assuming that the cookie is already set, so perhaps a returning visit, say it has a value of 9
-> then the value used or returned would be cookie-value+2, so 11

Hope that helps?

Si