PHP Manual
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XXIII. PHP options & information

Table of Contents
error_log — send an error message somewhere
error_reporting — set which PHP errors are reported
getenv — Get the value of an environment variable
get_cfg_var — Get the value of a PHP configuration option.
get_current_user — Get the name of the owner of the current PHP script.
get_magic_quotes_gpc — Get the current active configuration setting of magic quotes gpc.
get_magic_quotes_runtime — Get the current active configuration setting of magic_quotes_runtime.
getlastmod — Get time of last page modification.
getmyinode — Get the inode of the current script.
getmypid — Get PHP's process ID.
getmyuid — Get PHP script owner's UID.
getrusage — Get the current resource usages.
phpinfo — Output lots of PHP information.
phpversion — Get the current PHP version.
extension_loaded — find out whether an extension is loaded
putenv — Set the value of an environment variable.
set_magic_quotes_runtime — Set the current active configuration setting of magic_quotes_runtime.
set_time_limit — limit the maximum execution time
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