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|
--TEST--
Test array_diff() function : usage variations - arrays containing referenced variables
--FILE--
<?php
/* Prototype : array array_diff(array $arr1, array $arr2 [, array ...])
* Description: Returns the entries of $arr1 that have values which are not
* present in any of the others arguments.
* Source code: ext/standard/array.c
*/
/*
* Test how array_diff compares arrays that
* 1. Contain referenced variables
* 2. Have been referenced to each other
*/
echo "*** Testing array_diff() : usage variations ***\n";
$a = 'a';
$arr1 = array ("&$a", 'b', 'c');
$arr2 = array (1, 2, 3);
echo "-- Basic Comparison --\n";
var_dump(array_diff($arr1, $arr2));
var_dump(array_diff($arr2, $arr1));
$a = 1;
echo "-- \$a changed --\n";
var_dump(array_diff($arr1, $arr2));
var_dump(array_diff($arr2, $arr1));
$arr2 = &$arr1;
echo "-- Arrays referenced to each other --\n";
var_dump(array_diff($arr1, $arr2));
var_dump(array_diff($arr2, $arr1));
$arr1 = array('x', 'y', 'z');
echo "-- \$arr1 changed --\n";
var_dump(array_diff($arr1, $arr2));
var_dump(array_diff($arr2, $arr1));
echo "Done";
?>
--EXPECTF--
*** Testing array_diff() : usage variations ***
-- Basic Comparison --
array(3) {
[0]=>
string(2) "&a"
[1]=>
string(1) "b"
[2]=>
string(1) "c"
}
array(3) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
}
-- $a changed --
array(3) {
[0]=>
string(2) "&a"
[1]=>
string(1) "b"
[2]=>
string(1) "c"
}
array(3) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
}
-- Arrays referenced to each other --
array(0) {
}
array(0) {
}
-- $arr1 changed --
array(0) {
}
array(0) {
}
Done
|
