sqlsrv_prepare

sqlsrv_prepare

Prepares a query for execution

mixed **sqlsrv_prepare** resource $conn string $sql array $params array $options

Prepares a query for execution. This function is ideal for preparing a query that will be executed multiple times with different parameter values.

conn A connection resource returned by . sqlsrv_connect

sqlThe string that defines the query to be prepared and executed.

paramsAn array specifying parameter information when executing a parameterized query. Array elements can be any of the following:

  The following table describes the elements in the array structure above:

optionsAn array specifying query property options. The supported keys are described in the following table:

Returns a statement resource on success and false if an error occurred.

Voorbeeld: example

This example demonstrates how to prepare a statement with and re-execute it multiple times (with different parameter values) using . sqlsrv_prepare``sqlsrv_execute

<?php
$serverName = "serverName\sqlexpress";
$connectionInfo = array( "Database"=>"dbName", "UID"=>"username", "PWD"=>"password");
$conn = sqlsrv_connect( $serverName, $connectionInfo);
if( $conn === false) {
    die( print_r( sqlsrv_errors(), true));
}

$sql = "UPDATE Table_1
        SET OrderQty = ?
        WHERE SalesOrderID = ?";

// Initialize parameters and prepare the statement.
// Variables $qty and $id are bound to the statement, $stmt.
$qty = 0; $id = 0;
$stmt = sqlsrv_prepare( $conn, $sql, array( &$qty, &$id));
if( !$stmt ) {
    die( print_r( sqlsrv_errors(), true));
}

// Set up the SalesOrderDetailID and OrderQty information.
// This array maps the order ID to order quantity in key=>value pairs.
$orders = array( 1=>10, 2=>20, 3=>30);

// Execute the statement for each order.
foreach( $orders as $id => $qty) {
    // Because $id and $qty are bound to $stmt1, their updated
    // values are used with each execution of the statement.
    if( sqlsrv_execute( $stmt ) === false ) {
          die( print_r( sqlsrv_errors(), true));
    }
}
?>

When you prepare a statement that uses variables as parameters, the variables are bound to the statement. This means that if you update the values of the variables, the next time you execute the statement it will run with updated parameter values. For statements that you plan to execute only once, use . sqlsrv_query

sqlsrv_execute``sqlsrv_query