--TEST-- Test fflush() function: error conditions --FILE-- <?php /* Prototype: bool fflush ( resource $handle ); Description: Flushes the output to a file */ echo "*** Testing error conditions ***\n"; $file_path = dirname(__FILE__); // zero argument echo "-- Testing fflush(): with zero argument --\n"; var_dump( fflush() ); // more than expected no. of args echo "-- Testing fflush(): with more than expected number of arguments --\n"; $filename = "$file_path/fflush_error.tmp"; $file_handle = fopen($filename, "w"); if($file_handle == false) exit("Error:failed to open file $filename"); var_dump( fflush($file_handle, $file_handle) ); fclose($file_handle); // test invalid arguments : non-resources echo "-- Testing fflush(): with invalid arguments --\n"; $invalid_args = array ( "string", 10, 10.5, true, array(1,2,3), new stdclass ); /* loop to test fflush() with different invalid type of args */ for($loop_counter = 1; $loop_counter <= count($invalid_args); $loop_counter++) { echo "-- Iteration $loop_counter --\n"; var_dump( fflush($invalid_args[$loop_counter - 1]) ); } echo "Done\n"; ?> --CLEAN-- <?php $file_path = dirname(__FILE__); unlink("$file_path/fflush_error.tmp"); ?> --EXPECTF-- *** Testing error conditions *** -- Testing fflush(): with zero argument -- Warning: Wrong parameter count for fflush() in %s on line %d NULL -- Testing fflush(): with more than expected number of arguments -- Warning: Wrong parameter count for fflush() in %s on line %d NULL -- Testing fflush(): with invalid arguments -- -- Iteration 1 -- Warning: fflush(): supplied argument is not a valid stream resource in %s on line %d bool(false) -- Iteration 2 -- Warning: fflush(): supplied argument is not a valid stream resource in %s on line %d bool(false) -- Iteration 3 -- Warning: fflush(): supplied argument is not a valid stream resource in %s on line %d bool(false) -- Iteration 4 -- Warning: fflush(): supplied argument is not a valid stream resource in %s on line %d bool(false) -- Iteration 5 -- Warning: fflush(): supplied argument is not a valid stream resource in %s on line %d bool(false) -- Iteration 6 -- Warning: fflush(): supplied argument is not a valid stream resource in %s on line %d bool(false) Done