cubrid_lock_read

Description

The cubrid_lock_read() function is used to configure a read lock on the given instance by using an OID.

Syntax

bool cubrid_lock_read (resource $conn_identifier, string $oid)

• conn_identifier : Connection identifier
• oid : OID of an instance on which you want to configure a lock

Return Value

• Success : TRUE
• Failure : FALSE

Example

<?php

$conn = cubrid_connect("localhost", 33088, "demodb");

@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);

?>

The above example will output:

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 "

}

See Also

• cubrid_lock_write