cubrid_lock_read

Set a read lock on the given OID

&reftitle.description; `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`.

&reftitle.parameters;

`conn_identifier`

- Connection identifier.

`oid`

- OID of the instance that you want to put read lock on.

&reftitle.returnvalues;

&return.success;

&reftitle.examples;

### `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);
    ?>

&example.outputs;

    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         "
    }

&reftitle.seealso;

- `cubrid_lock_write`