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