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php

    1: --TEST--
    2: Returning a reference from a static method
    3: --FILE--
    4: <?php
    5: Class C {
    6: 	static function returnConstantByValue() {
    7: 		return 100;
    8: 	}
    9: 
   10: 	static function &returnConstantByRef() {
   11: 		return 100;
   12: 	}
   13: 	
   14: 	static function &returnVariableByRef() {
   15: 		return $GLOBALS['a'];
   16: 	}
   17: }
   18: 
   19: echo "\n---> 1. Trying to assign by reference the return value of a function that returns by value:\n";
   20: unset($a, $b);
   21: $a = 4;
   22: $b = &C::returnConstantByValue();
   23: $a++;
   24: var_dump($a, $b);
   25: 
   26: echo "\n---> 2. Trying to assign by reference the return value of a function that returns a constant by ref:\n";
   27: unset($a, $b);
   28: $a = 4;
   29: $b = &C::returnConstantByRef();
   30: $a++;
   31: var_dump($a, $b);
   32: 
   33: echo "\n---> 3. Trying to assign by reference the return value of a function that returns by ref:\n";
   34: unset($a, $b);
   35: $a = 4;
   36: $b = &C::returnVariableByRef();
   37: $a++;
   38: var_dump($a, $b);
   39: 
   40: ?>
   41: --EXPECTF--
   42: 
   43: ---> 1. Trying to assign by reference the return value of a function that returns by value:
   44: 
   45: Strict Standards: Only variables should be assigned by reference in %s on line 19
   46: int(5)
   47: int(100)
   48: 
   49: ---> 2. Trying to assign by reference the return value of a function that returns a constant by ref:
   50: 
   51: Notice: Only variable references should be returned by reference in %s on line 8
   52: int(5)
   53: int(100)
   54: 
   55: ---> 3. Trying to assign by reference the return value of a function that returns by ref:
   56: int(5)
   57: int(5)