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