PHP Functions
What will be the output of the following PHP code?
function foo($msg) {
echo "$msg";
}
$var1 = "foo";
$var1("will this work");

Error
0
Will this work
$msg

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PHP Functions
What will be the output of the following PHP code?
function addFunction($num1, $num2) {
$sum = $num1 + $num2;
return $sum;
}
$return_value = addFunction(10, 20);
echo "Returned value from the function : $return_value"

Returned value from the function : $return_value
Error
Returned value from the function :
Returned value from the function : 30

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