cubrid_is_instance(3) [php man page]

CUBRID_IS_INSTANCE(3)							 1						     CUBRID_IS_INSTANCE(3)

cubrid_is_instance - Check whether the instance pointed by OID exists

SYNOPSIS

       int cubrid_is_instance (resource  $conn_identifier, string  $oid)

DESCRIPTION

	The cubrid_is_instance(3) function is used to check whether the instance pointed by the given $oid exists or not.

PARAMETERS

	      o $conn_identifier
		-Connection identifier.

	      o $oid
		-OID of the instance that you want to check the existence.

RETURN VALUES

	1, if such instance exists;

	0, if such instance does not exist;

	-1, in case of error

EXAMPLES

       Example #1

	      cubrid_is_instance(3) example

	      <?php
	      $conn = cubrid_connect("localhost", 33000, "demodb");

	      $sql = <<<EOD
	      SELECT host_year, medal, game_date
	      FROM game
	      WHERE athlete_code IN
		  (SELECT code FROM athlete WHERE name='Thorpe Ian');
	      EOD;

	      $req = cubrid_execute($conn, $sql, CUBRID_INCLUDE_OID);
	      $oid = cubrid_current_oid($req);

	      $res = cubrid_is_instance ($conn, $oid);
	      if ($res == 1) {
		  echo "Instance pointed by $oid exists.
";
	      } else if ($res == 0){
		  echo "Instance pointed by $oid doesn't exist.
";
	      } else {
		  echo "error
";
	      }

	      cubrid_disconnect($conn);
	      ?>

	      The above example will output:

	      Instance pointed by @0|0|0 doesn't exist.

SEE ALSO

       cubrid_drop(3), cubrid_get_class_name(3).

PHP Documentation Group 												     CUBRID_IS_INSTANCE(3)

CUBRID_LOCK_WRITE(3)							 1						      CUBRID_LOCK_WRITE(3)

cubrid_lock_write - Set a write lock on the given OID

SYNOPSIS

       bool cubrid_lock_write (resource  $conn_identifier, string  $oid)

DESCRIPTION

	The cubrid_lock_write(3) function is used to put write lock on the instance pointed by the given $oid.

PARAMETERS

	      o $conn_identifier
		-Connection identifier.

	      o $oid
		-OID of the instance that you want to put write lock on.

RETURN VALUES

       TRUE, when process is successful.

       FALSE, when process is unsuccessful.

EXAMPLES

       Example #1

	      cubrid_lock_write(3) 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_write($conn, $oid);

	      $attr = cubrid_col_get($conn, $oid, "b");
	      var_dump($attr);

	      cubrid_put($conn, $oid, "b", array(2, 4, 8));

	      $attr = cubrid_col_get($conn, $oid, "b");
	      var_dump($attr);

	      cubrid_close_request($req);
	      cubrid_disconnect($conn);
	      ?>

	      The above example will output:

	      array(3) {
		[0]=>
		string(1) "1"
		[1]=>
		string(1) "2"
		[2]=>
		string(1) "3"
	      }
	      array(3) {
		[0]=>
		string(1) "2"
		[1]=>
		string(1) "4"
		[2]=>
		string(1) "8"
	      }

SEE ALSO

       cubrid_lock_read(3).

PHP Documentation Group 												      CUBRID_LOCK_WRITE(3)