{
return 100;
}
function &returnVariableByRef()
{
return $GLOBALS['a'];
}
function &returnFunctionCallByRef($functionToCall)
{
return $this->{$functionToCall}();
}
}
$c = new C();
echo "\n---> 1. Via a return by ref function call, assign by reference the return value of a function that returns by value:\n";
unset($a, $b);
$a = 4;
$b =& $c->returnFunctionCallByRef('returnConstantByValue');
$a++;
var_dump($a, $b);
echo "\n---> 2. Via a return by ref function call, assign by reference the return value of a function that returns a constant by ref:\n";
unset($a, $b);
$a = 4;
$b =& $c->returnFunctionCallByRef('returnConstantByRef');
$a++;
var_dump($a, $b);
echo "\n---> 3. Via a return by ref function call, assign by reference the return value of a function that returns by ref:\n";
unset($a, $b);
$a = 4;
$b =& $c->returnFunctionCallByRef('returnVariableByRef');
$a++;
var_dump($a, $b);
static function &returnConstantByRef()
{
return 100;
}
static function &returnVariableByRef()
{
return $GLOBALS['a'];
}
static function &returnFunctionCallByRef($functionToCall)
{
return C::$functionToCall();
}
}
echo "\n---> 1. Via a return by ref function call, assign by reference the return value of a function that returns by value:\n";
unset($a, $b);
$a = 4;
$b =& C::returnFunctionCallByRef('returnConstantByValue');
$a++;
var_dump($a, $b);
echo "\n---> 2. Via a return by ref function call, assign by reference the return value of a function that returns a constant by ref:\n";
unset($a, $b);
$a = 4;
$b =& C::returnFunctionCallByRef('returnConstantByRef');
$a++;
var_dump($a, $b);
echo "\n---> 3. Via a return by ref function call, assign by reference the return value of a function that returns by ref:\n";
unset($a, $b);
$a = 4;
$b =& C::returnFunctionCallByRef('returnVariableByRef');
$a++;
var_dump($a, $b);