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    cubrid_is_instance

    (PECL CUBRID >= 8.3.0)

    cubrid_is_instance — Check whether the instance pointed by OID exists

    説明

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

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

    パラメータ

    conn_identifier

    Connection identifier.

    oid

    OID of the instance that you want to check the existence.

    戻り値

    1, if such instance exists;

    0, if such instance does not exist;

    -1, in case of error

    例

    例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);
    ?>

    上の例の出力は以下となります。

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

    参考

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