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returns the value of the environment variable varname, or false on an error.
$ip = getenv ("remote_addr"); / / get the ip number of the user
Last Update: 2011-10-24
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returns the current value of the php configuration variable specified by varname, or false if an error occurs.
returns the current value of the php configuration variable specified by varname, or false if an error occurs.
\<emph\>varname:\</emph\>要將值指定給的變數。值與變數類型必須相容。
\<emph\>varname:\</emph\> variable that you want to assign a value to. value and variable type must be compatible.