1--TEST-- 2Pass same variable by ref and by value (PHP7). 3--FILE-- 4<?php 5function valRef($x, &$y) { 6 var_dump($x, $y); 7 var_dump(func_get_args()); 8 $x = 'changed.x'; 9 $y = 'changed.y'; 10 var_dump(func_get_args()); 11} 12 13function refVal(&$x, $y) { 14 var_dump($x, $y); 15 var_dump(func_get_args()); 16 $x = 'changed.x'; 17 $y = 'changed.y'; 18 var_dump(func_get_args()); 19} 20 21 22echo "\n\n-- Val, Ref --\n"; 23$a = 'original.a'; 24valRef($a, $a); 25var_dump($a); 26 27echo "\n\n-- Ref, Val --\n"; 28$b = 'original.b'; 29refVal($b, $b); 30var_dump($b); 31?> 32--EXPECT-- 33-- Val, Ref -- 34string(10) "original.a" 35string(10) "original.a" 36array(2) { 37 [0]=> 38 string(10) "original.a" 39 [1]=> 40 string(10) "original.a" 41} 42array(2) { 43 [0]=> 44 string(9) "changed.x" 45 [1]=> 46 string(9) "changed.y" 47} 48string(9) "changed.y" 49 50 51-- Ref, Val -- 52string(10) "original.b" 53string(10) "original.b" 54array(2) { 55 [0]=> 56 string(10) "original.b" 57 [1]=> 58 string(10) "original.b" 59} 60array(2) { 61 [0]=> 62 string(9) "changed.x" 63 [1]=> 64 string(9) "changed.y" 65} 66string(9) "changed.x" 67
