The BLOB data.
If optional and not specified, the function will try to find an open link to the FrontBase server and if no such link is found it will try to create one as if fbsql_connect() was called with no arguments
Returns a resource handle to the newly created BLOB, which can be used with insert and update commands to store the BLOB in the database.
$link = fbsql_pconnect("localhost", "_SYSTEM", "secret")
or die("Could not connect");
$filename = "blobfile.bin";
$fp = fopen($filename, "rb");
$blobdata = fread($fp, filesize($filename));
$blobHandle = fbsql_create_blob($blobdata, $link);
$sql = "INSERT INTO BLOB_TABLE (BLOB_COLUMN) VALUES ($blobHandle);";
$rs = fbsql_query($sql, $link);