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(PECL CUBRID >= 8.3.0)
cubrid_is_instance — Check whether the instance pointed by OID exists
$conn_identifier
, string $oid
)
The cubrid_is_instance() function is used to check
whether the instance pointed by the given oid
exists or not.
conn_identifier
Connection identifier.
oid
OID of the instance that you want to check the existence.
1, if such instance exists;
0, if such instance does not exist;
-1, in case of error
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 );
?>
以上例程会输出:
Instance pointed by @0|0|0 doesn't exist.