(PHP 5, PHP 7)
ibase_blob_close — Close blob
This function closes a BLOB that has either been opened for reading by ibase_blob_open() or has been opened for writing by ibase_blob_create().
If the BLOB was being read, this function returns TRUE on success, if
the BLOB was being written to, this function returns a string containing
the BLOB id that has been assigned to it by the database. On failure, this
function returns FALSE.