PHP cookie impossible to read issue

My PHP is unable to read a cookie like 开发者_Python百科this:

1010081-COP-9-20-20110606172032

echo $_COOKIE["SubmCookie"];

It just returns empty...

How is that possible?

This is the way how I set the Cookie:

setcookie("SubmCookie",$refNumb, time()+3600*24);

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Try:

setcookie("SubmCookie",$refNumb, time()+3600*24,'/');