php的帮助文档,涉及到PHP的案例和基本语法,以及实际应用内容

												 				  Alias of is_float				  				 				 				 is_callable				 is_float				 Variable handling Functions				 PHP Manual								 				  is_double				  (PHP 4, PHP 5)is_double — Alias of is_float()								 								 				  Description				  				   This function is an alias of: 				   is_float().				  				 												 is_callable				 is_float				 Variable handling Functions				 PHP Manual