Aplicativo de exemplo (driver PDO_SQLSRV)
O aplicativo de exemplo AdventureWorks Product Reviews é um aplicativo Web que usa o driver PDO_SQLSRV dos Drivers da Microsoft para PHP para SQL Server. O aplicativo permite que o usuário pesquise produtos inserindo uma palavra-chave e, para um produto selecionado, consulte as análises, escreva uma análise e carregue uma imagem.
Execução do aplicativo de exemplo
- Instale os Drivers da Microsoft para PHP para SQL Server. Para ver informações detalhadas, confira Introdução aos drivers da Microsoft para PHP para SQL Server
- Copie o código mencionado posteriormente neste documento em dois arquivos: adventureworks_demo.php e photo.php.
- Coloque os arquivos adventureworks_demo.php e photo.php.no diretório raiz do servidor Web.
- Execute o aplicativo iniciando o https://localhost/adventureworks_demo.php no navegador.
Requisitos
Para executar o aplicativo de exemplo AdventureWorks Product Reviews, as condições a seguir devem ser atendidas em seu computador:
- O sistema cumpre os requisitos dos Drivers da Microsoft para PHP para SQL Server. Para obter informações detalhadas, confira Requisitos do sistema para os drivers da Microsoft para PHP para SQL Server.
- Os arquivos adventureworks_demo.php e photo.php estão no diretório raiz do servidor Web. Os arquivos devem conter o código mencionado posteriormente neste documento.
- O SQL Server 2005 ou o SQL Server 2008, com o banco de dados AdventureWorks2008 anexado, está instalado no computador local.
- Um navegador da Web está instalado.
Exemplo com o AdventureWorks
O aplicativo de exemplo AdventureWorks Product Reviews demonstra o seguinte:
- Como abrir uma conexão com o SQL Server usando a Autenticação do Windows.
- Como preparar e executar uma consulta parametrizada.
- Como recuperar dados.
- Como verificar se há erros.
Este exemplo retorna informações do banco de dados sobre os produtos com nomes que contêm uma cadeia de caracteres inserida pelo usuário. Na lista de produtos retornados, o usuário pode ver análises, ver uma imagem, carregar uma imagem e escrever uma análise para um produto selecionado.
Coloque o seguinte código em um arquivo chamado adventureworks_demo_pdo.php:
<!--=============
This file is part of a Microsoft SQL Server Shared Source Application.
Copyright (C) Microsoft Corporation. All rights reserved.
THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE.
============= *-->
<!--Note: The presentation formatting of this example application -->
<!-- is intentionally simple to emphasize the SQL Server -->
<!-- data access code.-->
<html>
<head>
<title>AdventureWorks Product Reviews</title>
</head>
<body>
<h1 align='center'>AdventureWorks Product Reviews</h1>
<h5 align='center'>This application is a demonstration of the
object oriented API (PDO_SQLSRV driver) for the
Microsoft Drivers for PHP for SQL Server.</h5><br/>
<?php
$serverName = "(local)\sqlexpress";
/* Connect using Windows Authentication. */
try
{
$conn = new PDO( "sqlsrv:server=$serverName ; Database=AdventureWorks", "", "");
$conn->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );
}
catch(Exception $e)
{
die( print_r( $e->getMessage() ) );
}
if(isset($_REQUEST['action']))
{
switch( $_REQUEST['action'] )
{
/* Get AdventureWorks products by querying against the product name.*/
case 'getproducts':
try
{
$params = array($_POST['query']);
$tsql = "SELECT ProductID, Name, Color, Size, ListPrice
FROM Production.Product
WHERE Name LIKE '%' + ? + '%' AND ListPrice > 0.0";
$getProducts = $conn->prepare($tsql);
$getProducts->execute($params);
$products = $getProducts->fetchAll(PDO::FETCH_ASSOC);
$productCount = count($products);
if($productCount > 0)
{
BeginProductsTable($productCount);
foreach( $products as $row )
{
PopulateProductsTable( $row );
}
EndProductsTable();
}
else
{
DisplayNoProdutsMsg();
}
}
catch(Exception $e)
{
die( print_r( $e->getMessage() ) );
}
GetSearchTerms( !null );
break;
/* Get reviews for a specified productID. */
case 'getreview':
GetPicture( $_GET['productid'] );
GetReviews( $conn, $_GET['productid'] );
break;
/* Write a review for a specified productID. */
case 'writereview':
DisplayWriteReviewForm( $_POST['productid'] );
break;
/* Submit a review to the database. */
case 'submitreview':
try
{
$tsql = "INSERT INTO Production.ProductReview (ProductID,
ReviewerName,
ReviewDate,
EmailAddress,
Rating,
Comments)
VALUES (?,?,?,?,?,?)";
$params = array(&$_POST['productid'],
&$_POST['name'],
date("Y-m-d"),
&$_POST['email'],
&$_POST['rating'],
&$_POST['comments']);
$insertReview = $conn->prepare($tsql);
$insertReview->execute($params);
}
catch(Exception $e)
{
die( print_r( $e->getMessage() ) );
}
GetSearchTerms( true );
GetReviews( $conn, $_POST['productid'] );
break;
/* Display form for uploading a picture.*/
case 'displayuploadpictureform':
try
{
$tsql = "SELECT Name FROM Production.Product WHERE ProductID = ?";
$getName = $conn->prepare($tsql);
$getName->execute(array($_GET['productid']));
$name = $getName->fetchColumn(0);
}
catch(Exception $e)
{
die( print_r( $e->getMessage() ) );
}
DisplayUploadPictureForm( $_GET['productid'], $name );
break;
/* Upload a new picture for the selected product. */
case 'uploadpicture':
try
{
$tsql = "INSERT INTO Production.ProductPhoto (LargePhoto)
VALUES (?)";
$uploadPic = $conn->prepare($tsql);
$fileStream = fopen($_FILES['file']['tmp_name'], "r");
$uploadPic->bindParam(1,
$fileStream,
PDO::PARAM_LOB,
0,
PDO::SQLSRV_ENCODING_BINARY);
$uploadPic->execute();
/* Get the first field - the identity from INSERT -
so we can associate it with the product ID. */
$photoID = $conn->lastInsertId();
$tsql = "UPDATE Production.ProductProductPhoto
SET ProductPhotoID = ?
WHERE ProductID = ?";
$associateIds = $conn->prepare($tsql);
$associateIds->execute(array($photoID, $_POST['productid']));
}
catch(Exception $e)
{
die(print_r($e->getMessage()));
}
GetPicture( $_POST['productid']);
DisplayWriteReviewButton( $_POST['productid'] );
GetSearchTerms (!null);
break;
}//End Switch
}
else
{
GetSearchTerms( !null );
}
function GetPicture( $productID )
{
echo "<table align='center'><tr align='center'><td>";
echo "<img src='photo_pdo.php?productId=".$productID."'
height='150' width='150'/></td></tr>";
echo "<tr align='center'><td><a href='?action=displayuploadpictureform&productid=".$productID."'>Upload new picture.</a></td></tr>";
echo "</td></tr></table></br>";
}
function GetReviews( $conn, $productID )
{
try
{
$tsql = "SELECT ReviewerName,
CONVERT(varchar(32),
ReviewDate, 107) AS [ReviewDate],
Rating,
Comments
FROM Production.ProductReview
WHERE ProductID = ?
ORDER BY ReviewDate DESC";
$getReviews = $conn->prepare( $tsql);
$getReviews->execute(array($productID));
$reviews = $getReviews->fetchAll(PDO::FETCH_NUM);
$reviewCount = count($reviews);
if($reviewCount > 0 )
{
foreach($reviews as $row)
{
$name = $row[0];
$date = $row[1];
$rating = $row[2];
$comments = $row[3];
DisplayReview( $productID, $name, $date, $rating, $comments );
}
}
else
{
DisplayNoReviewsMsg();
}
}
catch(Exception $e)
{
die(print_r($e->getMessage()));
}
DisplayWriteReviewButton( $productID );
GetSearchTerms(!null);
}
/*** Presentation and Utility Functions ***/
function BeginProductsTable($rowCount)
{
/* Display the beginning of the search results table. */
$headings = array("Product ID", "Product Name", "Color", "Size", "Price");
echo "<table align='center' cellpadding='5'>";
echo "<tr bgcolor='silver'>$rowCount Results</tr><tr>";
foreach ( $headings as $heading )
{
echo "<td>$heading</td>";
}
echo "</tr>";
}
function DisplayNoProdutsMsg()
{
echo "<h4 align='center'>No products found.</h4>";
}
function DisplayNoReviewsMsg()
{
echo "<h4 align='center'>There are no reviews for this product.</h4>";
}
function DisplayReview( $productID, $name, $date, $rating, $comments)
{
/* Display a product review. */
echo "<table style='WORD-BREAK:BREAK-ALL' width='50%' align='center' border='1' cellpadding='5'>";
echo "<tr>
<td>ProductID</td>
<td>Reviewer</td>
<td>Date</td>
<td>Rating</td>
</tr>";
echo "<tr>
<td>$productID</td>
<td>$name</td>
<td>$date</td>
<td>$rating</td>
</tr>
<tr>
<td width='50%' colspan='4'>$comments</td></tr></table><br/><br/>";
}
function DisplayUploadPictureForm( $productID, $name )
{
echo "<h3 align='center'>Upload Picture</h3>";
echo "<h4 align='center'>$name</h4>";
echo "<form align='center' action='adventureworks_demo_pdo.php'
enctype='multipart/form-data' method='POST'>
<input type='hidden' name='action' value='uploadpicture'/>
<input type='hidden' name='productid' value='$productID'/>
<table align='center'>
<tr>
<td align='center'>
<input id='fileName' type='file' name='file'/>
</td>
</tr>
<tr>
<td align='center'>
<input type='submit' name='submit' value='Upload Picture'/>
</td>
</tr>
</table>
</form>";
}
function DisplayWriteReviewButton( $productID )
{
echo "<table align='center'><form action='adventureworks_demo_pdo.php'
enctype='multipart/form-data' method='POST'>
<input type='hidden' name='action' value='writereview'/>
<input type='hidden' name='productid' value='$productID'/>
<input type='submit' name='submit' value='Write a Review'/>
</p></td></tr></form></table>";
}
function DisplayWriteReviewForm( $productID )
{
/* Display the form for entering a product review. */
echo "<h5 align='center'>Name, E-mail, and Rating are required fields.</h5>";
echo "<table align='center'>
<form action='adventureworks_demo_pdo.php'
enctype='multipart/form-data' method='POST'>
<input type='hidden' name='action' value='submitreview'/>
<input type='hidden' name='productid' value='$productID'/>
<tr>
<td colspan='5'>Name: <input type='text' name='name' size='50'/></td>
</tr>
<tr>
<td colspan='5'>E-mail: <input type='text' name='email' size='50'/></td>
</tr>
<tr>
<td>Rating: 1<input type='radio' name='rating' value='1'/></td>
<td>2<input type='radio' name='rating' value='2'/></td>
<td>3<input type='radio' name='rating' value='3'/></td>
<td>4<input type='radio' name='rating' value='4'/></td>
<td>5<input type='radio' name='rating' value='5'/></td>
</tr>
<tr>
<td colspan='5'>
<textarea rows='20' cols ='50' name='comments'>[Write comments here.]</textarea>
</td>
</tr>
<tr>
<td colspan='5'>
<p align='center'><input type='submit' name='submit' value='Submit Review'/>
</td>
</tr>
</form>
</table>";
}
function EndProductsTable()
{
echo "</table><br/>";
}
function GetSearchTerms( $success )
{
/* Get and submit terms for searching the database. */
if (is_null( $success ))
{
echo "<h4 align='center'>Review successfully submitted.</h4>";}
echo "<h4 align='center'>Enter search terms to find products.</h4>";
echo "<table align='center'>
<form action='adventureworks_demo_pdo.php'
enctype='multipart/form-data' method='POST'>
<input type='hidden' name='action' value='getproducts'/>
<tr>
<td><input type='text' name='query' size='40'/></td>
</tr>
<tr align='center'>
<td><input type='submit' name='submit' value='Search'/></td>
</tr>
</form>
</table>";
}
function PopulateProductsTable( $values )
{
/* Populate Products table with search results. */
$productID = $values['ProductID'];
echo "<tr>";
foreach ( $values as $key => $value )
{
if ( 0 == strcasecmp( "Name", $key ) )
{
echo "<td><a href='?action=getreview&productid=$productID'>$value</a></td>";
}
elseif( !is_null( $value ) )
{
if ( 0 == strcasecmp( "ListPrice", $key ) )
{
/* Format with two digits of precision. */
$formattedPrice = sprintf("%.2f", $value);
echo "<td>$$formattedPrice</td>";
}
else
{
echo "<td>$value</td>";
}
}
else
{
echo "<td>N/A</td>";
}
}
echo "<td>
<form action='adventureworks_demo_pdo.php' enctype='multipart/form-data' method='POST'>
<input type='hidden' name='action' value='writereview'/>
<input type='hidden' name='productid' value='$productID'/>
<input type='submit' name='submit' value='Write a Review'/>
</td></tr>
</form></td></tr>";
}
?>
</body>
</html>
Exemplo de LOB
O script photo.php retorna uma foto do produto com o ProductIDespecificado. Esse script é chamado do script adventureworks_demo.php.
Coloque o seguinte código em um arquivo chamado photo_pdo.php:
<?php
/*
=============
This file is part of a Microsoft SQL Server Shared Source Application.
Copyright (C) Microsoft Corporation. All rights reserved.
THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE.
=============
*/
$serverName = "(local)\sqlexpress";
/* Connect using Windows Authentication. */
try
{
$conn = new PDO( "sqlsrv:server=$serverName ; Database=AdventureWorks", "", "");
$conn->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );
}
catch(Exception $e)
{
die( print_r( $e->getMessage() ) );
}
/* Get the product picture for a given product ID. */
try
{
$tsql = "SELECT LargePhoto
FROM Production.ProductPhoto AS p
JOIN Production.ProductProductPhoto AS q
ON p.ProductPhotoID = q.ProductPhotoID
WHERE ProductID = ?";
$stmt = $conn->prepare($tsql);
$stmt->execute(array(&$_GET['productId']));
$stmt->bindColumn(1, $image, PDO::PARAM_LOB, 0, PDO::SQLSRV_ENCODING_BINARY);
$stmt->fetch(PDO::FETCH_BOUND);
echo $image;
}
catch(Exception $e)
{
die( print_r( $e->getMessage() ) );
}
?>
Consulte Também
Comparando funções de execução
Atualizar dados (Drivers da Microsoft para PHP para SQL Server)
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