Saving a file to a BLOB and back...

Question

Hello everyone.
I'm trying to save a file to a blob, and recover the blob value later to save to a file, but i'm having problems.
I'm recording and retrieving the data sucessfuly, but the file written is like corrupted. But it is with the same filesize as the original one.
This is how i'm doing:
Recording the file to the database (BLOB):
<?
$conn = oci_connect('USER_NAME', 'PASSWORD', '(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=MYSERVER)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=MYSERVICENAME)))');
$filePath = '/var/www/html/Something.png';
$fileOut = '/var/www/html/fileback.png';
$codigo = 5;
$blob = oci_new_descriptor($conn, OCI_D_LOB);
$sql =
"begin
   insert into MYTABLE (COD, FILE) values (:COD, :FILE);
exception
  when dup_val_on_index then
     update MYTABLE set FILE = :FILE where COD = :COD;
end;";
// Parse the query
$stid = oci_parse($conn, $sql);
// Bind values
oci_bind_by_name($stid, ":COD",  $codigo);
oci_bind_by_name($stid, ":FILE", $blob, -1, OCI_B_BLOB);
// Get the file
$file = fopen($filePath, 'rb');
// Read file content
$fileContent = fread($file, filesize($filePath));
// Write file content to the BLOB
$blob->writeTemporary($fileContent);
// Execute the statement
$r = oci_execute($stid, OCI_DEFAULT);
// Commit
oci_commit($conn);
// Close BLOB descriptor
$blob->close();
// Release the statement and close the connection
oci_free_statement($stid);
oci_close($conn);
Retrieving the BLOB value:
$conn = oci_connect('USER_NAME', 'PASSWORD', '(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=MYSERVER)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=MYSERVICENAME)))');
$filePath = '/var/www/html/Something.png';
$fileOut = '/var/www/html/fileback.png';
$codigo = 5;
$sql = 'select * from MYTABLE where COD = :COD';
$stmt = oci_parse($conn, $sql);
oci_bind_by_name($stmt, ":COD", $codigo);
$result = oci_execute($stmt);
$a = oci_fetch_array($stmt, OCI_RETURN_NULLS);
$a['FILE']->export($fileOut);   // Don't work
//file_put_contents($fileOut, $a['FILE']->read($a['FILE']->size()), FILE_BINARY);   // Don't work
//file_put_contents($fileOut, $a['FILE']->load(), FILE_BINARY);   // Don't work
fwrite(fopen($fileOut, 'rwb'), $a['FILE']->load());
oci_close($conn);If someone can help me with anything i appreciate, thanks.
Edited by: user1977051 on 12/06/2009 10:33

Answer 1

I solved it.
The problem is because the execute after the blob write:
// Write file content to the BLOB
$blob->writeTemporary($fileContent);
// Execute the statement
$r = oci_execute($stid, OCI_DEFAULT);and should be:
// Execute the statement
$r = oci_execute($stid, OCI_DEFAULT);
// Write file content to the BLOB
$blob->writeTemporary($fileContent);
// i'm using this instead
$blob->saveFile($filePath);Thanks.