(PECL CUBRID >= 8.3.0)
cubrid_is_instance — 檢查 OID 指向的實體是否存在
cubrid_is_instance() 函式用於檢查給定 oid 指向的實體是否存在。
conn_identifier連線識別碼。
oid您要檢查其是否存在的實體的 OID。
如果此類實體存在，則為 1；
如果此類實體不存在，則為 0；
如果發生錯誤，則為 -1
範例 #1 cubrid_is_instance() 範例
<?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);
?>以上範例會輸出
Instance pointed by @0|0|0 doesn't exist.