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101 lines
1.9 KiB
PHP
101 lines
1.9 KiB
PHP
--TEST--
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Test array_diff_assoc() 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_assoc(array $arr1, array $arr2 [, array ...])
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* Description: Returns the entries of $arr1 that have values which are not
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* present in any of the others arguments but do additional checks whether the keys are equal
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* Source code: ext/standard/array.c
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*/
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/*
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* Tests how array_diff_assoc compares
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* 1. Referenced variables
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* 2. Arrays that have been referenced to each other
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*/
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echo "*** Testing array_diff_assoc() : usage variations ***\n";
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$a = 'a';
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$arr1 = array('a', 'b', 'c', $a);
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$arr2 = array('a' => 1, 'b' => 2, 'c' => 3, &$a);
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echo "-- Results when \$a = $a: --\n";
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var_dump(array_diff_assoc($arr1, $arr2));
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var_dump(array_diff_assoc($arr2, $arr1));
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$a = 4;
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echo "-- Results when \$a has been changed to $a: --\n";
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var_dump(array_diff_assoc($arr1, $arr2));
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var_dump(array_diff_assoc($arr2, $arr1));
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$arr2 = &$arr1;
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echo "-- Results when \$arr2 is referenced to \$arr1 --\n";
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var_dump(array_diff_assoc($arr1, $arr2));
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var_dump(array_diff_assoc($arr2, $arr1));
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$arr1 = array('zero' => 'x', 'one' => 'y', 'two' => 'z');
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echo "-- Results when \$arr1 is changed --\n";
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var_dump(array_diff_assoc($arr1, $arr2));
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var_dump(array_diff_assoc($arr2, $arr1));
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echo "Done";
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?>
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--EXPECTF--
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*** Testing array_diff_assoc() : usage variations ***
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-- Results when $a = a: --
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array(3) {
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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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[3]=>
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string(1) "a"
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}
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array(3) {
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["a"]=>
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int(1)
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["b"]=>
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int(2)
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["c"]=>
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int(3)
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}
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-- Results when $a has been changed to 4: --
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array(4) {
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[0]=>
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string(1) "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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[3]=>
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string(1) "a"
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}
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array(4) {
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["a"]=>
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int(1)
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["b"]=>
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int(2)
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["c"]=>
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int(3)
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[0]=>
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&int(4)
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}
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-- Results when $arr2 is referenced to $arr1 --
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array(0) {
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}
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array(0) {
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}
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-- Results when $arr1 is 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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