I was wondering if one method was better than the other. I have been using the $_SERVER method to point to the current directory but is this method better than the realpath(dirname(_FILE_)) method or is there any difference?
PHP $ _SERVER ['DOCUMENT_ROOT'] vs realpath（dirname（_FILE_））
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- douxing5199 2014-05-25 09:20关注
The
$_SERVER[ 'DOCUMENT_ROOT' ]variable returns a server setting. Specifically it returns:The document root directory under which the current script is executing, as defined in the server's configuration file.
The
realpath( dirname( __FILE__ ) )function will return the path of the folder that the current script is actually residing.One is returning the value of a server setting and the other evaluates to a file's path. In some cases, the values will be the same but you should be aware of the difference between the two.
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