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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: 	var_dump(func_num_args());
    8: 	$x = 'changed.x';
    9: 	$y = 'changed.y';
   10: 	var_dump(func_num_args());
   11: }
   12: 
   13: function refVal(&$x, $y) {
   14: 	var_dump($x, $y);
   15: 	var_dump(func_num_args());
   16: 	$x = 'changed.x';
   17: 	$y = 'changed.y';
   18: 	var_dump(func_num_args());
   19: }
   20: 
   21: 
   22: echo "\n\n-- Val, Ref --\n";
   23: $a = 'original.a';
   24: valRef($a, $a);
   25: var_dump($a);
   26: 
   27: echo "\n\n-- Ref, Val --\n";
   28: $b = 'original.b';
   29: refVal($b, $b);
   30: var_dump($b);
   31: ?>
   32: --EXPECTF--
   33: 
   34: 
   35: -- Val, Ref --
   36: string(10) "original.a"
   37: string(10) "original.a"
   38: int(2)
   39: int(2)
   40: string(9) "changed.y"
   41: 
   42: 
   43: -- Ref, Val --
   44: string(10) "original.b"
   45: string(10) "original.b"
   46: int(2)
   47: int(2)
   48: string(9) "changed.x"