Check whether the instance pointed by OID exists

cubrid_insert_id
cubrid_lob_close
CUBRID Functions
PHP Manual

# cubrid_is_instance

(PECL CUBRID >= 8.3.0)

cubrid_is_instance — Check whether the instance pointed by OID exists

### Description

int cubrid_is_instance ( resource `$conn_identifier` , string `$oid` )

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

### Parameters

`conn_identifier`

  Connection identifier.

`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() 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 $oid exists.\n";
} else if ($res == 0){
echo "Instance pointed by $oid doesn't exist.\n";
} else {
echo "error\n";
}
cubrid_disconnect($conn);
?>`

The above example will output:

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

### See Also

- cubrid_drop() - Delete an instance using OID
- cubrid_get_class_name() - Get the class name using OID

cubrid_insert_id
cubrid_lob_close
CUBRID Functions
PHP Manual