cubrid_lob2_seek64
cubrid_lob2_size64
CUBRID Funkcje
PHP Manual

# cubrid_lob2_seek

(PECL CUBRID >= 8.4.1)

cubrid_lob2_seek — Move the cursor of a lob object.

### Opis

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.

### Parametry

`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.

### Zwracane wartości

`TRUE` if the process is successful and `FALSE` for failure.

### Przykłady

Przykład #1 cubrid_lob2_seek() example

`<?php
// test_lob (id INT, contents CLOB)
$conn = cubrid_connect("localhost", 33000, "demodb", "public", "");
$req = cubrid_execute($conn, "INSERT INTO test_lob (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, "beautifull");
cubrid_lob2_seek($lob, 15, CUBRID_CURSOR_CURRENT);
$data = cubrid_lob2_read($lob, 5);
cubrid_bind($req, 1, $lob);
cubrid_execute($req);
cubrid_disconnect($conn);
?>`

### Zobacz też:

- 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.

cubrid_lob2_seek64
cubrid_lob2_size64
CUBRID Funkcje
PHP Manual