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

												 				  Not documented				  				 				 				 stats_dens_chisquare				 stats_dens_f				 Statistic Functions				 PHP Manual								 				  stats_dens_exponential				  (PECL stats:1.0.0-1.0.2)stats_dens_exponential — Not documented								 				 				  Description				  				   float stats_dens_exponential				    ( float $x				   , float $scale				   )												  WarningThis function is				currently not documented; only its argument list is available.												 								 				  Parameters				  				   								    								     x												     								      				      				     								    								    								     scale												     								      				      				     								    								   								  				 												 				  Return Values				  				  				 												 												 												 												 																 stats_dens_chisquare				 stats_dens_f				 Statistic Functions				 PHP Manual