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The difference between __FILE__ and $_SERVER['SCRIPT_FILENAME']

WBOY
WBOYOriginal
2016-07-25 08:56:471081browse
  2. echo $_SERVER['SCRIPT_FILENAME'].'
    ';
  3. echo __FILE__;
Copy the code

Execute a.php to get:

  3. require 'a.php';
Copy the code

and execute b.php, the result is:

E:/var/www/b.php ($_SERVER['SCRIPT_FILENAME']) E:wampwwwTexta.php (__FILE__)

From this, we can draw the difference between the two: $_SERVER['SCRIPT_FILENAME'] The absolute path and file name of the currently executing program __FILE__ The absolute path and file name of the original file (included file)

Dear, do you understand? Regarding the difference between __FILE__ and $_SERVER['SCRIPT_FILENAME'], please understand the meaning contained in the above example.



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