我试图使用php mssql函数从SQL Server 2008数据库上的存储过程中捕获put。代码运行时没有错误,但是我的输出参数之一得到了一个奇怪的值。
存储过程代码:
CREATE PROCEDURE [dbo].[check_barcode_and_return]
@Barcode nvarchar(20),
@IsInDatabase int OUTPUT,
@Product_Info nvarchar(100) OUTPUT
AS
SELECT @IsInDatabase = COUNT(*) FROM dbo.product_info WHERE barcode = @Barcode
DECLARE @Brand varchar(45)
SET @Brand = (SELECT brand FROM dbo.product_info WHERE barcode = @Barcode)
DECLARE @Description varchar(50)
SET @Description = (SELECT product_desc FROM dbo.product_info WHERE barcode = @Barcode)
SELECT @Product_Info = @Brand + '_' + @Description
RETURN
GO
以下是调用它的PHP代码:
<?php
// use a barcode known to be present in database
$barcode_yes = '11335577';
// use a sbarcode known NOT to be in database
$barcode_no = '0011223344';
$host = '00.000.000.000';
$db = 'dbName';
$user = 'username';
$password = 'password';
$barcodeInDB = 0;
$productInfo = "";
try {
$conn = mssql_connect($host, $user, $password);
mssql_select_db($db, $conn);
$stmt = mssql_init('check_barcode_and_return', $conn);
mssql_bind($stmt, '@Barcode', $barcode_yes, SQLVARCHAR, false, false, 20);
mssql_bind($stmt, '@IsInDatabase', $barcodeInDB, SQLINT1, true, false, 1);
mssql_bind($stmt, '@Product_Info', $productInfo, SQLVARCHAR, true, false, 100);
mssql_execute($stmt, true);
echo 'positive test results:'."\n";
echo 'output $barcodeInDB = '.$barcodeInDB."\n";
echo '$productInfo = '.$sampleInfo."\n";
//reset for next call
mssql_free_statement($stmt);
$barcodeInDB = 0;
$productInfo = "";
$stmt = mssql_init('check_barcode_and_return', $conn);
mssql_bind($stmt, '@Barcode', $barcode_no, SQLVARCHAR, false, false, 20);
mssql_bind($stmt, '@IsInDatabase', $barcodeInDB, SQLINT1, true, false, 1);
mssql_bind($stmt, '@Product_Info', $productInfo, SQLVARCHAR, true, false, 100);
mssql_execute($stmt, true);
echo 'negative test results:'."\n";
echo 'output $barcodeInTable = '.$barcodeInDB."\n";
echo '$productInfo = '.$productInfo."\n";
mssql_close($conn);
}
catch (Exception $e) {
echo $e->getMessage();
}
?>
当我从命令行运行它时,结果如下:
positive test results:
output $barcodeInDB = 968529665
$productInfo = Heinz_tomato ketchup
negative test results:
output $barcodeInTable = 968529664
$productInfo = _
如果我直接使用SQL Server Management Studio运行存储过程,输入上面使用的条形码,我会得到 @BarcodeInDB = 1 进行肯定测试, @BarcodeInDB = 0 对于负面的。
代码位于运行 Ubuntu with php5.3.10 的Linux服务器上。
我需要更改什么才能获得整数输出参数的正确值?
答案 0 :(得分:0)
我需要将输出参数绑定为SQLINT4的整数数据类型,因为显然,T-SQL整数变量是4字节整数。试图强制它们进入容量较小的数据类型(即SQLINT1,SQLINT2或SQLBIT)会导致不可预测的输出。
所以,我改为......
...
mssql_bind($stmt, '@IsInDatabase', $barcodeInDB, SQLINT4, true);
...
它工作正常。