check existence of the path Post: 302240766

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LEARN ABOUT PHP

cubrid_is_instance

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)