cubrid_lob2_seek

cubrid_lob2_seek

Move the cursor of a lob object

bool **cubrid_lob2_seek** resource $lob_identifier int $offset int $origin

The function is used to move the cursor position of a lob object by the value set in the argument, to the direction set in the argument. cubrid_lob2_seek``offset``origin

To set the argument, you can use to set the cursor position moving forward units from the first beginning. In this case, must be a positive value. origin``CUBRID_CURSOR_FIRST``offset``offset

If you use for , you can move forward or backward. and can be positive or negative. CUBRID_CURSOR_CURRENT``origin``offset

If you use for , you can move backward units from the end of LOB object and only can be positive. CUBRID_CURSOR_LAST``origin``offset``offset

lob_identifierLob identifier as a result of or get from the result set.cubrid_lob2_new

offsetNumber of units you want to move the cursor.

originThis 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.success

Voorbeeld: 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);
?>

cubrid_lob2_read``cubrid_lob2_write``cubrid_lob2_seek64``cubrid_lob2_tell``cubrid_lob2_tell64``cubrid_lob2_size``cubrid_lob2_size64