Putting session value in a varrible in PHP

I want to store a value from a session in a variable to work on in the current script. However 开发者_开发问答when i run;

$from = $_SESSION['userid'];
echo '$from'; 

$from seems to be blank. When i run echo '$_SESSION['userid']'; it returns the correct value

Take out the quotes or change it to double quotes

echo $from; 

When using single quotes variables aren't expanded. See the strings documentation for more on this.

You could either do:

echo $from;

or

echo "$from";

Assuming your id is an integer the code would be more secure this way:

$from = intval($_SESSION['userid']);
echo $from;

try

$from = $_SESSION['userid']; 
echo $from; 

echo $from;

You don't need quotes around variables to echo. IMHO it's bad practice.