cubrid_lock_read

Set a read lock on the given OID

Beschreibung

bool cubrid_lock_read ( resource $conn_identifier , string $oid )

The cubrid_lock_read function is used to put read lock on the instance pointed by given oid.

Parameter-Liste

conn_identifier: Connection identifier.
oid: OID of the instance that you want to put read lock on.

Rückgabewerte

TRUE, when process is successful.

FALSE, when process is unsuccessful.

Beispiele

Beispiel #1 cubrid_lock_read example


<?php
$conn = cubrid_connect("localhost", 33000, "demodb", "dba");

@cubrid_execute($conn, "DROP TABLE foo");
cubrid_execute($conn, "CREATE TABLE foo(a int AUTO_INCREMENT, b set(int), c list(int), d char(10))");
cubrid_execute($conn, "INSERT INTO foo(a, b, c, d) VALUES(1, {1,2,3}, {11,22,33,333}, 'a')");
cubrid_execute($conn, "INSERT INTO foo(a, b, c, d) VALUES(2, {4,5,7}, {44,55,66,666}, 'b')");

$req = cubrid_execute($conn, "SELECT * FROM foo", CUBRID_INCLUDE_OID);

cubrid_move_cursor($req, 1, CUBRID_CURSOR_FIRST);
$oid = cubrid_current_oid($req);

cubrid_lock_read($conn, $oid);

$attr = cubrid_get($conn, $oid, "b");
var_dump($attr);

$attr = cubrid_get($conn, $oid);
var_dump($attr);

cubrid_close_request($req);
cubrid_disconnect($conn);
?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

string(9) "{1, 2, 3}"
array(4) {
  ["a"]=>
  string(1) "1"
  ["b"]=>
  array(3) {
    [0]=>
    string(1) "1"
    [1]=>
    string(1) "2"
    [2]=>
    string(1) "3"
  }
  ["c"]=>
  array(4) {
    [0]=>
    string(2) "11"
    [1]=>
    string(2) "22"
    [2]=>
    string(2) "33"
    [3]=>
    string(3) "333"
  }
  ["d"]=>
  string(10) "a         "
}

Siehe auch

cubrid_lock_write