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--TEST-- Test array_chunk() function : usage variations - different 'size' values --FILE-- <?php /* Prototype : array array_chunk(array $array, int $size [, bool $preserve_keys]) * Description: Split array into chunks * : Chunks an array into size large chunks * Source code: ext/standard/array.c */ /* * Testing array_chunk() function with following conditions * 1. -ve size value * 2. size value is more than the no. of elements in the input array * 3. size value is zero * 4. Decimal size value */ echo "*** Testing array_chunk() : usage variations ***\n"; // input array $input_array = array(1, 2, 3); // different magnitude's $sizes = array(-1, count($input_array) + 1, 0, 1.5); // loop through the array for size argument foreach ($sizes as $size){ echo "\n-- Testing array_chunk() when size = $size --\n"; var_dump( array_chunk($input_array, $size) ); var_dump( array_chunk($input_array, $size, true) ); var_dump( array_chunk($input_array, $size, false) ); } echo "Done"; ?> --EXPECTF-- *** Testing array_chunk() : usage variations *** -- Testing array_chunk() when size = -1 -- Warning: array_chunk(): Size parameter expected to be greater than 0 in %s on line %d NULL Warning: array_chunk(): Size parameter expected to be greater than 0 in %s on line %d NULL Warning: array_chunk(): Size parameter expected to be greater than 0 in %s on line %d NULL -- Testing array_chunk() when size = 4 -- array(1) { [0]=> array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } } array(1) { [0]=> array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } } array(1) { [0]=> array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } } -- Testing array_chunk() when size = 0 -- Warning: array_chunk(): Size parameter expected to be greater than 0 in %s on line %d NULL Warning: array_chunk(): Size parameter expected to be greater than 0 in %s on line %d NULL Warning: array_chunk(): Size parameter expected to be greater than 0 in %s on line %d NULL -- Testing array_chunk() when size = 1.5 -- array(3) { [0]=> array(1) { [0]=> int(1) } [1]=> array(1) { [0]=> int(2) } [2]=> array(1) { [0]=> int(3) } } array(3) { [0]=> array(1) { [0]=> int(1) } [1]=> array(1) { [1]=> int(2) } [2]=> array(1) { [2]=> int(3) } } array(3) { [0]=> array(1) { [0]=> int(1) } [1]=> array(1) { [0]=> int(2) } [2]=> array(1) { [0]=> int(3) } } Done