cubrid_lob2_seek
(PECL CUBRID >= 8.4.1)
cubrid_lob2_seek — Move the cursor of a lob object.
Description
$lob_identifier
, int $offset
[, int $origin = CUBRID_CURSOR_CURRENT
] )
The cubrid_lob2_seek() function is used to move the cursor
position of a lob object by the value set in the offset
argument, to the direction set in the origin argument.
To set the origin argument, you can use CUBRID_CURSOR_FIRST
to set the cursor position moving forward offset units from
the first beginning. In this case, offset must be a positive value.
If you use CUBRID_CURSOR_CURRENT for origin, you can move
forward or backward. and offset can be positive or negative.
If you use CUBRID_CURSOR_LAST for origin, you can move
backward offset units from the end of LOB object and
offset only can be positive.
Parameters
-
lob_identifier -
Lob identifier as a result of cubrid_lob2_new() or get from the result set.
-
offset -
Number of units you want to move the cursor.
-
origin -
This parameter can be the following values:
CUBRID_CURSOR_FIRST: move forward from the first beginning.
CUBRID_CURSOR_CURRENT: move forward or backward from the current position.
CUBRID_CURSOR_LAST: move backward at the end of LOB object.
Return Values
TRUE if the process is successful and FALSE for failure.
Examples
Example #1 cubrid_lob2_seek() example
<?php
// test_lob (id INT, contents CLOB)
$conn = cubrid_connect("localhost", 33000, "demodb", "dba", "");
cubrid_execute($conn,"DROP TABLE if exists test_lob");
cubrid_execute($conn,"CREATE TABLE test_lob (id INT, contents CLOB)");
$req = cubrid_prepare($conn, "INSERT INTO test_lob VALUES(2, ?)");
$lob = cubrid_lob2_new($conn, 'CLOB');
$len = cubrid_lob2_write($lob, "Hello world");
cubrid_lob2_seek($lob, 0, CUBRID_CURSOR_LAST);
cubrid_lob2_write($lob, "beautiful");
cubrid_lob2_seek($lob, 15, CUBRID_CURSOR_FIRST);
$data = cubrid_lob2_read($lob, 5);
echo $data."\n";
cubrid_lob2_bind($req, 1, $lob);
cubrid_execute($req);
cubrid_disconnect($conn);
?>
See Also
- cubrid_lob2_read() - Read from BLOB/CLOB data.
- cubrid_lob2_write() - Write to a lob object.
- cubrid_lob2_seek64() - Move the cursor of a lob object.
- cubrid_lob2_tell() - Tell the cursor position of the LOB object.
- cubrid_lob2_tell64() - Tell the cursor position of the LOB object.
- cubrid_lob2_size() - Get a lob object's size.
- cubrid_lob2_size64() - Get a lob object's size.
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- CUBRID
- cubrid_bind
- cubrid_close_prepare
- cubrid_close_request
- cubrid_col_get
- cubrid_col_size
- cubrid_column_names
- cubrid_column_types
- cubrid_commit
- cubrid_connect_with_url
- cubrid_connect
- cubrid_current_oid
- cubrid_disconnect
- cubrid_drop
- cubrid_error_code_facility
- cubrid_error_code
- cubrid_error_msg
- cubrid_execute
- cubrid_fetch
- cubrid_free_result
- cubrid_get_autocommit
- cubrid_get_charset
- cubrid_get_class_name
- cubrid_get_client_info
- cubrid_get_db_parameter
- cubrid_get_query_timeout
- cubrid_get_server_info
- cubrid_get
- cubrid_insert_id
- cubrid_is_instance
- cubrid_lob_close
- cubrid_lob_export
- cubrid_lob_get
- cubrid_lob_send
- cubrid_lob_size
- cubrid_lob2_bind
- cubrid_lob2_close
- cubrid_lob2_export
- cubrid_lob2_import
- cubrid_lob2_new
- cubrid_lob2_read
- cubrid_lob2_seek64
- cubrid_lob2_seek
- cubrid_lob2_size64
- cubrid_lob2_size
- cubrid_lob2_tell64
- cubrid_lob2_tell
- cubrid_lob2_write
- cubrid_lock_read
- cubrid_lock_write
- cubrid_move_cursor
- cubrid_next_result
- cubrid_num_cols
- cubrid_num_rows
- cubrid_pconnect_with_url
- cubrid_pconnect
- cubrid_prepare
- cubrid_put
- cubrid_rollback
- cubrid_schema
- cubrid_seq_drop
- cubrid_seq_insert
- cubrid_seq_put
- cubrid_set_add
- cubrid_set_autocommit
- cubrid_set_db_parameter
- cubrid_set_drop
- cubrid_set_query_timeout
- cubrid_version
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