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--TEST-- Test array_change_key_case() function : usage variations - different int values for $case --FILE-- <?php /* Prototype : array array_change_key_case(array $input [, int $case]) * Description: Retuns an array with all string keys lowercased [or uppercased] * Source code: ext/standard/array.c */ /* * Pass different integer values as $case argument to array_change_key_case() to test behaviour */ echo "*** Testing array_change_key_case() : usage variations ***\n"; $input = array('One' => 'un', 'TWO' => 'deux', 'three' => 'trois'); for ($i = -5; $i <=5; $i += 1){ echo "\n-- \$sort argument is $i --\n"; $temp = $input; var_dump(array_change_key_case($temp, $i)); } echo "Done"; ?> --EXPECTF-- *** Testing array_change_key_case() : usage variations *** -- $sort argument is -5 -- array(3) { ["ONE"]=> string(2) "un" ["TWO"]=> string(4) "deux" ["THREE"]=> string(5) "trois" } -- $sort argument is -4 -- array(3) { ["ONE"]=> string(2) "un" ["TWO"]=> string(4) "deux" ["THREE"]=> string(5) "trois" } -- $sort argument is -3 -- array(3) { ["ONE"]=> string(2) "un" ["TWO"]=> string(4) "deux" ["THREE"]=> string(5) "trois" } -- $sort argument is -2 -- array(3) { ["ONE"]=> string(2) "un" ["TWO"]=> string(4) "deux" ["THREE"]=> string(5) "trois" } -- $sort argument is -1 -- array(3) { ["ONE"]=> string(2) "un" ["TWO"]=> string(4) "deux" ["THREE"]=> string(5) "trois" } -- $sort argument is 0 -- array(3) { ["one"]=> string(2) "un" ["two"]=> string(4) "deux" ["three"]=> string(5) "trois" } -- $sort argument is 1 -- array(3) { ["ONE"]=> string(2) "un" ["TWO"]=> string(4) "deux" ["THREE"]=> string(5) "trois" } -- $sort argument is 2 -- array(3) { ["ONE"]=> string(2) "un" ["TWO"]=> string(4) "deux" ["THREE"]=> string(5) "trois" } -- $sort argument is 3 -- array(3) { ["ONE"]=> string(2) "un" ["TWO"]=> string(4) "deux" ["THREE"]=> string(5) "trois" } -- $sort argument is 4 -- array(3) { ["ONE"]=> string(2) "un" ["TWO"]=> string(4) "deux" ["THREE"]=> string(5) "trois" } -- $sort argument is 5 -- array(3) { ["ONE"]=> string(2) "un" ["TWO"]=> string(4) "deux" ["THREE"]=> string(5) "trois" } Done