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variable in a variable. Possible???
Posted: Sat May 22, 2010 6:19 pm
by jtorral
Normally,
I would check for a cookie something like this
$_COOKIE['cookie_name']
But how can I do this ...
$cn = "cookie_name";
$_COOKIE['$cn'];
I can't get it to work. Is there a special way of assigning a variable to a global predefined?
Thanks
Re: variable in a variable. Possible???
Posted: Sat May 22, 2010 6:38 pm
by requinix
Don't use quotes around variables when you don't need them.
Code: Select all
$cn = "cookie_name";
echo $_COOKIE[$cn];
Re: variable in a variable. Possible???
Posted: Sat May 22, 2010 6:50 pm
by jtorral
I tried that and it did not work. Here is what I have ...
i have javascript that sets a cookie when I click on a link.
I then call the function below from my php script to check the value of the cookie.
I am trying to use variable $div because I have 20 cookies withe the name xxx_div1 through xxx_div20 therefor I am trying to create the cookie name in the call so i can minimize code.
If i take the function below and replace $divcn with the actual cookie name it works as expected. If I use the variable, it always goes to the else.
Code: Select all
function checkdivsettings($div) {
$divcn = "xxx_" . $div;
if(isset($_COOKIE[$divcn])) {
$div = $_COOKIE[$divcn];
} else {
$div = "block";
}
return $div;
}
Re: variable in a variable. Possible???
Posted: Sat May 22, 2010 10:17 pm
by Chalks
that's how you should do it. My guess is that it's not working because javascript is executed client-side (i.e. after the php has already finished running).