Warning: fread() [function.fread]: Length parameter must be greater than 0

Question

I've got a site hosted with 1and1 - who are useless! For some reason the backup scripts they provide no longer work and they can't provide me with an answer! So I thought I'd write my own, this is my code:

  if (file_exists('backupfile.sql')){

 $FP = fopen ( 'backupfile.sql', 'r' );
 $READ = fread ( $FP, filesize ( 'backupfile.sql') );
 $READ = explode ( ";\n", $READ );

 foreach ( $READ AS $RED )
 {
  mysql_query ( $RED );
 }

  echo 'Done'; 
 }else{
  echo "no file";
 }

however this gives me the following error

Warning: fread() [function.fread]: Length parameter must be greater than 0 

if I put an @ infront of the fread the script doesn't error but it doesn't perform the backup.

Answer 1

Well... My guess from the error message would be that backupfile.sql is empty. Therefore, fread() can't read anything from it.

Answer 2

filesize ( 'backupfile.sql')

is not giving you a filesize, try putting in the full path to the file, also make sure PHP has permission to read the file.

edit: you can use is_readable() to test if the file can be read

Answer 3

you have to specify a max read size when using fread. that indicates that it thinks your filesize is 0. try using FILE instead since it's a local file and all...

if (file_exists('backupfile.sql')){

 $READ = file( 'backupfile.sql');

 foreach ( $READ AS $RED )
 {
  mysql_query ( $RED );
 }

  echo 'Done'; 
 }else{
  echo "no file";
 }