.htaccess file is a magic file. You can change the way your website works by using it. I have been reading a lot about .htaccess files. Perticularly .htaccess is very useful in shared web hosting environment where the users have no direct access to their servers or they want to implement some restrictions/security to their files. I will include here some very essential and useful .htaccess tricks. I have used some of these tricks and more to secure my websites according to my web server’s environment and to optimize speed/performance of my websites. Websites with heavy traffic, Digg traffic, Stumble upon or slashdot traffic will need to be optimized via many ways and .htaccess can help a lot.
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It is easy to upload file when the Register_Globals are set to ON in the php.ini file (php configuration file) which is not recommended in any case for security reasons. When Globals are OFF then in this case I have tried this script and it works fine. Following is the script. Create two files. one html containing form and the other php file containing php script. This script will need a directory named as ‘img’ in root where this php script file is located according to the requirement of code. You can customize this code.
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function_exists — Return TRUE if the given function has been defined. To check that whether a function is defined or exists or not use function_exists. Checks the list of defined functions, both built-in (internal) and user-defined, for function_name. Returns TRUE on success or FALSE on failure.
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