cubrid_prepare
(PECL CUBRID >= 8.3.0)
cubrid_prepare — Prepare a SQL statement for execution
说明
$conn_identifier ,
string $prepare_stmt [,
int $option = 0 ] ) :
resource
The cubrid_prepare() function is a sort of API which represents SQL statements compiled previously to a given connection handle. This pre-compiled SQL statement will be included in the cubrid_prepare().
Accordingly, you can use this statement effectively to execute several times repeatedly or to process long data. Only a single statement can be used and a parameter may put a question mark (?) to appropriate area in the SQL statement. Add a parameter when you bind a value in the VALUES clause of INSERT statement or in the WHERE clause. Note that it is allowed to bind a value to a MARK(?) by using the cubrid_bind() function only.
参数
-
conn_identifier -
Connection identifier.
-
prepare_stmt -
Prepare query.
-
option -
OID return option CUBRID_INCLUDE_OID.
返回值
Request identifier, if process is successful;
FALSE, if process is unsuccessful.
范例
Example #1 cubrid_prepare() example
<?php
$conn = cubrid_connect("localhost", 33000, "demodb");
$sql = <<<EOD
SELECT g.event_code, e.name
FROM game g
JOIN event e ON g.event_code=e.code
WHERE host_year = ? AND event_code NOT IN (SELECT event_code FROM game WHERE host_year=?) GROUP BY event_code;
EOD;
$req = cubrid_prepare($conn, $sql);
cubrid_bind($req, 1, 2004);
cubrid_bind($req, 2, 2000);
cubrid_execute($req);
$row_num = cubrid_num_rows($req);
printf("There are %d event that exits in 2004 olympic but not in 2000. For example:\n\n", $row_num);
printf("%-15s %s\n", "Event_code", "Event_name");
printf("----------------------------\n");
$row = cubrid_fetch_assoc($req);
printf("%-15d %s\n", $row["event_code"], $row["name"]);
$row = cubrid_fetch_assoc($req);
printf("%-15d %s\n", $row["event_code"], $row["name"]);
cubrid_disconnect($conn);
?>
以上例程会输出：
There are 27 event that exits in 2004 olympic but not in 2000. For example: Event_code Event_name ---------------------------- 20063 +91kg 20070 64kg
参见
- cubrid_execute() - Execute a prepared SQL statement
- cubrid_bind() - Bind variables to a prepared statement as parameters
