--TEST-- Test array_diff_uassoc() function : usage variation - Passing float indexed array --FILE-- '0', 10 => '10', -10 => '-10', 20 =>'20', -20 => '-20'); $float_indx_array = array(0.0 => '0.0', 10.5 => '10.5', -10.5 => '-10.5', 0.5 => '0.5'); echo "\n-- Testing array_diff_key() function with float indexed array --\n"; var_dump( array_diff_uassoc($input_array, $float_indx_array, "strcasecmp") ); var_dump( array_diff_uassoc($float_indx_array, $input_array, "strcasecmp") ); ?> ===DONE=== --EXPECTF-- *** Testing array_diff_uassoc() : usage variation *** -- Testing array_diff_key() function with float indexed array -- array(5) { [0]=> string(1) "0" [10]=> string(2) "10" [-10]=> string(3) "-10" [20]=> string(2) "20" [-20]=> string(3) "-20" } array(3) { [0]=> string(3) "0.5" [10]=> string(4) "10.5" [-10]=> string(5) "-10.5" } ===DONE===