CUBRID_LOB2_SEEK(3) 1 CUBRID_LOB2_SEEK(3)
cubrid_lob2_seek - Move the cursor of a lob object.
SYNOPSIS
bool cubrid_lob2_seek (resource $lob_identifier, int $offset, [int $origin = CUBRID_CURSOR_CURRENT])
DESCRIPTION
The cubrid_lob2_seek(3) 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 begin-
ning. 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 posi-
tive.
PARAMETERS
o $lob_identifier
-Lob identifier as a result of cubrid_lob2_new(3) or get from the result set.
o $offset
-Number of units you want to move the cursor.
o $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(3) 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 $data."
";
cubrid_lob2_bind($req, 1, $lob);
cubrid_execute($req);
cubrid_disconnect($conn);
?>
SEE ALSO
cubrid_lob2_read(3), cubrid_lob2_write(3), cubrid_lob2_seek64(3), cubrid_lob2_tell(3), cubrid_lob2_tell64(3), cubrid_lob2_size(3),
cubrid_lob2_size64(3).
PHP Documentation Group CUBRID_LOB2_SEEK(3)