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php

    1: --TEST--
    2: Implicit initialisation when passing by reference 
    3: --FILE--
    4: <?php
    5: function passbyVal($val) {
    6: 	echo "\nInside passbyVal call:\n";
    7: 	var_dump($val);
    8: }
    9: 
   10: function passbyRef(&$ref) {
   11: 	echo "\nInside passbyRef call:\n";
   12: 	var_dump($ref);
   13: }
   14: 
   15: echo "\nPassing undefined by value\n";
   16: passbyVal($undef1[0]);
   17: echo "\nAfter call\n";
   18: var_dump($undef1);
   19: 
   20: echo "\nPassing undefined by reference\n";
   21: passbyRef($undef2[0]);
   22: echo "\nAfter call\n";
   23: var_dump($undef2)
   24: ?>
   25: --EXPECTF--
   26: 
   27: Passing undefined by value
   28: 
   29: Notice: Undefined variable: undef1 in %s on line 13
   30: 
   31: Inside passbyVal call:
   32: NULL
   33: 
   34: After call
   35: 
   36: Notice: Undefined variable: undef1 in %s on line 15
   37: NULL
   38: 
   39: Passing undefined by reference
   40: 
   41: Inside passbyRef call:
   42: NULL
   43: 
   44: After call
   45: array(1) {
   46:   [0]=>
   47:   NULL
   48: }