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Digg  pg_lo_open
Open a large object
(PHP 4 >= 4.2.0, PHP 5)
Example 1947. pg_lo_open() example<?phpCode Examples / Notes » pg_lo_openmetator
Just for the record, a user must be a superuser (database owner) in order to invoke pg_lo_open() (though pg_lo_create() may be invoked...). This opens a gigantic security hole in the db. If a user is not a superuser, db will raise an error with message "Can't create Large Object.". Thus, imho, one should use pg_escape_bytea() instead. riccardo_ridenti
//INSERT FILE INTO DB $fp = fopen($filename,"r"); $buffer = fread($fp,filesize($filename)); fclose($fp); pg_query ($conn, "begin"); $oid = pg_lo_create ($conn); //echo "$oid\n"; $rs = pg_exec($conn,"insert into table(object) values($oid);");//object field type must be "oid" $handle = pg_lo_open ($conn, $oid, "w"); //echo "$handle\n"; pg_lo_write ($handle, $buffer); pg_lo_close ($handle); pg_query ($conn, "commit"); //OR END pg_close(); //GET BUFFER(file) FROM DB $rs = pg_exec($conn,"select object from objects where id = xxxxxx;"); $row = pg_fetch_row($rs,0); pg_query ($conn, "begin"); $loid = pg_lo_open($conn,$row[0], "r"); pg_lo_read_all ($loid); pg_lo_close ($loid); pg_query ($conn, "commit"); //OR END pg_close(); |
Change Language
pg_affected_rows pg_cancel_query pg_client_encoding pg_close pg_connect pg_connection_busy pg_connection_reset pg_connection_status pg_convert pg_copy_from pg_copy_to pg_dbname pg_delete pg_end_copy pg_escape_bytea pg_escape_string pg_execute pg_fetch_all_columns pg_fetch_all pg_fetch_array pg_fetch_assoc pg_fetch_object pg_fetch_result pg_fetch_row pg_field_is_null pg_field_name pg_field_num pg_field_prtlen pg_field_size pg_field_table pg_field_type_oid pg_field_type pg_free_result pg_get_notify pg_get_pid pg_get_result pg_host pg_insert pg_last_error pg_last_notice pg_last_oid pg_lo_close pg_lo_create pg_lo_export pg_lo_import pg_lo_open pg_lo_read_all pg_lo_read pg_lo_seek pg_lo_tell pg_lo_unlink pg_lo_write pg_meta_data pg_num_fields pg_num_rows pg_options pg_parameter_status pg_pconnect pg_ping pg_port pg_prepare pg_put_line pg_query_params pg_query pg_result_error_field pg_result_error pg_result_seek pg_result_status pg_select pg_send_execute pg_send_prepare pg_send_query_params pg_send_query pg_set_client_encoding pg_set_error_verbosity pg_trace pg_transaction_status pg_tty pg_unescape_bytea pg_untrace pg_update pg_version |
