Set a read lock on the given OID

cubrid_lob2_write
cubrid_lock_write
CUBRID Functions
PHP Manual

# cubrid_lock_read

(PECL CUBRID >= 8.3.0)

cubrid_lock_read — Set a read lock on the given OID

### 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`.

### Parameters

`conn_identifier`

  Connection identifier.

`oid`

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

### Return Values

`TRUE`, when process is successful.

`FALSE`, when process is unsuccessful.

### Examples

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);
?>`

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() - Set a write lock on the given OID

cubrid_lob2_write
cubrid_lock_write
CUBRID Functions
PHP Manual