odbc_prepare

(PHP 4, PHP 5)

odbc_prepare — Prepares a statement for execution

说明

resource odbc_prepare ( resource $connection_id , string $query_string )

Prepares a statement for execution. The result identifier can be used later to execute the statement with odbc_execute().

Some databases (such as IBM DB2, MS SQL Server, and Oracle) support stored procedures that accept parameters of type IN, INOUT, and OUT as defined by the ODBC specification. However, the Unified ODBC driver currently only supports parameters of type IN to stored procedures.

参数

connection_id: ODBC 连接标识符，详见 odbc_connect()。
query_string: The query string statement being prepared.

返回值

Returns an ODBC result identifier if the SQL command was prepared successfully. Returns FALSE on error.

范例

Example #1 odbc_execute() and odbc_prepare() example

In the following code, $success will only be TRUE if all three parameters to myproc are IN parameters:


<?php
$a = 1;
$b = 2;
$c = 3;
$stmt    = odbc_prepare($conn, 'CALL myproc(?,?,?)');
$success = odbc_execute($stmt, array($a, $b, $c));
?>

If you need to call a stored procedure using INOUT or OUT parameters, the recommended workaround is to use a native extension for your database (for example, mssql for MS SQL Server, or oci8 for Oracle).

参见

odbc_execute() - Execute a prepared statement

PHP手册 - N: Prepares a statement for execution

用户评论:

brad dot westness at gmail dot com (04-Oct-2010 06:39)

When working with MSSQL over FreeTDS, calling a stored procedure that accepts a variable in the following way DOES NOT work: <?php $results = odbc_prepare($conn, "{CALL sp_Test(?)}"); odbc_exec($results, array("some string")); ?> From what I've gleaned via trial and error, the "some string" never gets sufficiently bound to the ? as the variable input (perhaps because there is no ODBC equivalent to the mssql_bind() method). The stored procedure will always return an SQL Server error code HY000. The following works for me (although I don't think it's documented anywhere): <?php $results = odbc_prepare($conn, "{CALL sp_Test('some string')}"); odbc_exec($results, array()); ?>

Ron (30-Aug-2007 10:33)

odbc_exec() returns BOOLEAN if the query doesn't return a result set. If the query returns a result set, odbc_exec() returns a resource to that result set.

bslorence (07-Dec-2006 09:50)

Is it just me or is the code above misleading? It makes it look like odbc_execute() returns a resource suitable, say, for passing to one of the odbc_fetch_* functions. In fact, odbc_execute() returns a boolean, which simply indicates success (TRUE) or failure (FALSE). The variable to pass to odbc_fetch_* is the same one that you pass to odbc_execute(): <?php $res = odbc_prepare($db_conn, $query_string); if(!$res) die("could not prepare statement ".$query_string); if(odbc_execute($res, $parameters)) { $row = odbc_fetch_array($res); } else { // handle error } ?>

Marek (16-Dec-2004 08:59)

Use this example for IBM DB/2: $q = "update TABLE set PASS=? where NAME=?"; $res = odbc_prepare ($con, $q); $a = "secret"; $b="user"; $exc = odbc_execute($res, array($a, $b));