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--TEST--
Returning a reference from a function via another function
--FILE--
<?php
function returnConstantByValue() {
return 100;
}
function &returnConstantByRef() {
return 100;
}
function &returnVariableByRef() {
return $GLOBALS['a'];
}
function &returnFunctionCallByRef($functionToCall) {
return $functionToCall();
}
echo "\n---> 1. Via a return by ref function call, assign by reference the return value of a function that returns by value:\n";
unset($a, $b);
$a = 4;
$b = &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 = &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 = &returnFunctionCallByRef('returnVariableByRef');
$a++;
var_dump($a, $b);
?>
--EXPECTF--
---> 1. Via a return by ref function call, assign by reference the return value of a function that returns by value:
Notice: Only variable references should be returned by reference in %s on line 15
int(5)
int(100)
---> 2. Via a return by ref function call, assign by reference the return value of a function that returns a constant by ref:
Notice: Only variable references should be returned by reference in %s on line 7
int(5)
int(100)
---> 3. Via a return by ref function call, assign by reference the return value of a function that returns by ref:
int(5)
int(5)
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