Description:
------------
It doesn't matter if a $file variable contains valid file name or just a string of no sense, in both cases mysql_query() returns 'true'. When the valid file name is being used the load is successful.


Reproduce code:
---------------
mysql_query("INSERT INTO ssert(id, file) VALUES(NULL, '')", $link);
$id = mysql_insert_id($link);
$file = "/no/such/file";
if(mysql_query("UPDATE ssert SET file=LOAD_FILE('$file') WHERE id=$id", $link))
{
  echo 'Success';
}
else
{
  echo 'False';
}

Expected result:
----------------
Expected 'False' on file not loaded into the database since /no/such/file does not exist.

Actual result:
--------------
mysql_query("UPDATE ssert SET file=LOAD_FILE('$file') WHERE id=$id", $link) returns true although the file does not exist.