php中phpinfo不显示的私密信息的方法

phpinfo()调试也好，在后台查看也好，应该适当隐藏私密信息。

一般只需要查看1，4，8，那么

echo phpinfo(13); // 即可显示模块，配置，基础信息

Name (constant)	Value	Description
INFO_GENERAL	1	The configuration line, php.ini location, build date, Web Server, System and more.
INFO_CREDITS	2	PHP Credits. See also phpcredits().
INFO_CONFIGURATION	4	Current Local and Master values for PHP directives. See also ini_get().
INFO_MODULES	8	Loaded modules and their respective settings. See also get_loaded_extensions().
INFO_ENVIRONMENT	16	Environment Variable information that's also available in $_ENV.
INFO_VARIABLES	32	Shows all predefined variables from EGPCS (Environment, GET, POST, Cookie, Server).
INFO_LICENSE	64	PHP License information. See also the » license FAQ.
INFO_ALL	-1	Shows all of the above.