cubrid_lob2_seek64
cubrid_lob2_size64
CUBRID Functions
PHP Manual

# cubrid_lob2_seek

Move the cursor of a lob object.

### Description

bool cubrid_lob2_seek ( resource `$lob_identifier` , int `$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
- cubrid_lob2_write
- cubrid_lob2_seek64
- cubrid_lob2_tell
- cubrid_lob2_tell64
- cubrid_lob2_size
- cubrid_lob2_size64