Subversion Repositories ALCASAR

		//store in a file user @IP who can join this page.

		$filename='/tmp/current_users.txt';

		//change me avoid duplicate user @IP

		$change_me = 1;

		//check if filename exists

		if(file_exists($filename)){

			$fichier = fopen($filename, "r");

			$content = file($filename);

			//if file is empty, we put user @IP in it.

			if(empty($content))

			{

				file_put_contents($filename, $_SERVER['REMOTE_ADDR']);

			}

			else

			{

				//if we found duplicate IP, it will not write user @IP in filename (set change_me = 0)

				foreach($content as $line){

				        $line = preg_replace('/\s+/', '', $line);

				        if($line == $_SERVER['REMOTE_ADDR'])

				        {

				                $change_me = 0;

				        }

				}

				//if user @IP does not exist, we will write it in filename

				if($change_me)

				{

				        file_put_contents($filename, $_SERVER['REMOTE_ADDR'].PHP_EOL , FILE_APPEND);

				}

			}

		}

		else

		{

			//we create filename and we put user @IP in it.

			file_put_contents($filename, $_SERVER['REMOTE_ADDR'].PHP_EOL);

		}