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cubrid_lock_read

Description

The cubrid_lock_read function configures read lock on the desired instance by using the 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 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