--TEST-- Test is_dir() function: basic functionality --FILE-- <?php /* Prototype: bool is_dir ( string $filename ); Description: Tells whether the filename is a regular file Returns TRUE if the filename exists and is a regular file */ echo "*** Testing is_dir(): basic functionality ***\n"; $file_path = dirname(__FILE__); var_dump( is_dir($file_path) ); clearstatcache(); var_dump( is_dir(".") ); var_dump( is_dir(__FILE__) ); // expected: bool(false) $dir_name = $file_path."/is_dir_basic"; mkdir($dir_name); var_dump( is_dir($dir_name) ); echo "*** Testing is_dir() for its return value type ***\n"; var_dump( is_bool( is_dir($file_path) ) ); var_dump( is_bool( is_dir("/no/such/dir") ) ); echo "*** Done ***"; ?> --CLEAN-- <?php $file_path = dirname(__FILE__); $dir_name = $file_path."/is_dir_basic"; rmdir($dir_name); ?> --EXPECTF-- *** Testing is_dir(): basic functionality *** bool(true) bool(true) bool(false) bool(true) *** Testing is_dir() for its return value type *** bool(true) bool(true) *** Done ***