For you to summarize some PHP system class function _php skill

Think that the collation of the more detailed, the pro, quickly collect it!

PHP System class functions

assert function: Check if assertion declaration is wrong
extension_loaded function: Check that the PHP extension is loaded
Get_cfg_var function: Gets the value of the PHP configuration option
get_current_user function: Gets the name of the owner of the current PHP script
get_defined_constants Function: returns an array containing PHP predefined constant information
get_extension_funcs function : Returns an array containing the names of all functions in the specified module
get_include_path Function: returns information for the currently configured file include path
get_included_files Function: Returns an array of file-containing information
get_loaded_extensions Function: returns an array containing all the loading module information
GET_MAGIC_QUOTES_GPC function: get status information for MAGIC_QUOTES_GPC
get_magic_quotes_runtime function: get status information for Magic_quotes_ runtime
get_required_files Function: Returns an array of file-containing information
getenv function: Gets the value of the PHP environment variable

PHP System class functions

getlastmod function: Gets the last modification time of the current PHP paging file
getmygid function: Gets the GID number of the current PHP script page owner
getmyinode function : Gets the inode number of the current PHP script page
getmypid function: get PHP pid
getmyuid function: Gets the UID number of the owner of the PHP script page
getopt function: getting settings from the command line argument list
getrusage function: Gets the current resource syntax
ini_get_all function: Get all configuration options
ini_get function: Gets the value of the configuration option
memory_get_usage Function: returns the memory space occupied by PHP scripts
php_ini_scanned_files Function: Returns a list of profiles in the configuration file directory
php_logo_guid function: get the GUID of the logo picture
php_sapi_name function: gets the interface type between PHP and the Web server
php_uname function: Get the operating system information of PHP script running
phpcredits function: Print credits list
phpinfo function: output PHP Information
phpversion function: get PHP version
zend_logo_guid function: gets the GUID of Zend's logo picture
zend_version function: Get the version of the Zend engine

PHP Configuration class functions

assert_options Function: Sets or gets a different declaration tag
ini_alter function: Set the value of the PHP configuration option
ini_restore function: Restore the value of the configuration option
ini_set function: Set the value of the PHP configuration option
putenv function: Setting environment variables
restore_include_path function: recovery file contains path configuration information
Set_include_path function: setting file contains path configuration options
set_magic_quotes_runtime function: set magic_quotes run time
set_time_limit function: set maximum execution time

Other class functions

DL function: load PHP Extension Module
main function: just a nominal main () function
version_compare function: compare PHP Two version values

All of the above is the PHP system class functions, I hope to help you learn.