Php/docs/function.cubrid-lock-read

• PHP Manual
• CUBRID 函数
• Set a read lock on the given OID

cubrid_lock_read

(PECL CUBRID >= 8.3.0)

cubrid_lock_read — Set a read lock on the given OID

说明

cubrid_lock_read ( resource $conn_identifier , string $oid ) : bool

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

参数

conn_identifier

Connection identifier.

oid

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

返回值

true, when process is successful.

false, when process is unsuccessful.

范例

Example #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);?>

以上例程会输出：

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         "
}

参见

• cubrid_lock_write() - Set a write lock on the given OID