Update core.php

core.php

@@ -1,10 +1,16 @@
 <?php
 function save_file ($file, $name){
+    //Generate a random set of numbers to set in front of the filename
     $rand_string = crc32(microtime(true).mt_rand(1000, 9000));
+    //Where to save
     $path='/home/neku/www/files/';
+    //Remove any tags
     $file_data=strip_tags($file);
+    //Put together the random string+filename
     $file_name=$rand_string.'_'.$name;
+    //Move the file to the above location with said filename
     move_uploaded_file($file_data,$path.$file_name);
+    //Return url+filename to the user
     echo 'http://a.uguu.se/'.$file_name;
 }
 ?>