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php

    1: --TEST--
    2: Pass same variable by ref and by value. 
    3: --FILE--
    4: <?php
    5: function valRef($x, &$y) {
    6: 	var_dump($x, $y);
    7: 	$x = 'changed.x';
    8: 	$y = 'changed.y';
    9: }
   10: 
   11: function refVal(&$x, $y) {
   12: 	var_dump($x, $y);
   13: 	$x = 'changed.x';
   14: 	$y = 'changed.y';
   15: }
   16: 
   17: 
   18: echo "\n\n-- Val, Ref --\n";
   19: $a = 'original.a';
   20: valRef($a, $a);
   21: var_dump($a);
   22: 
   23: echo "\n\n-- Ref, Val --\n";
   24: $b = 'original.b';
   25: refVal($b, $b);
   26: var_dump($b);
   27: ?>
   28: --EXPECTF--
   29: 
   30: 
   31: -- Val, Ref --
   32: string(10) "original.a"
   33: string(10) "original.a"
   34: string(9) "changed.y"
   35: 
   36: 
   37: -- Ref, Val --
   38: string(10) "original.b"
   39: string(10) "original.b"
   40: string(9) "changed.x"