在SQL Server上，RowCount始终使用存储过程在PHP中返回0

我对该

rowCount（）

函数始终返回0有问题。我已经尝试使用硬代码，但仍然没有显示结果

{“status”：false，“message:“获取报告簿无效！”}

这是我的ReportBook.php

<?php
header("Content-type: application/json");
include_once 'Database.php';
include_once 'master.php';


//$id_book=$_GET['id_book'];
//$TanggalStart = $_GET['TanggalStart'];
//$TanggalEnd = $_GET['TanggalEnd'];


$id_book='KD-BKK-1';
$TanggalStart = '2020-12-22';
$TanggalEnd = '2021-12-31';

// get database connection
$database = new Database();
$db = $database->getConnection();
// prepare province object
$reportbook = new Master($db);
$stmt = $reportbook->GetReportBook($id_book, $TanggalStart, $TanggalEnd);
if($stmt->rowCount() > 0){
    // get retrieved row
    while($row = $stmt->fetch())
    {
        // create array
        $book_arr[]=array(
            "status" => true,
            "id_book" => $row['id_book'],
            "book_name" => $row['book_name'],
            "author" => $row['author'],
            "description" => $row['description'],
            "book_price" => $row['book_price'],
            "id_publication" => $row['id_publication'],
            "id_branch" => $row['id_branch'],
            "qty" => $row['qty'],
            "rental_qty" => $row['rental_qty'],
            "imagename" => $row['imagename'],
            "imagepath" => $row['imagepath'],
            "entry_date" => $row['entry_date'],
        );
    }

}
else{
    $book_arr=array(
        "status" => false,
        "message" => "Invalid Get Report Book!",
    );
}
// make it json format
print_r(json_encode($book_arr));

?>

这是我的SP GetReportBook（它在ASP.NET上工作）

ALTER过程[dbo].[GetReportBook]
(
@id_book varchar（50），
@TanggalStart varchar（50），
@TanggalEnd varchar（50）
)
作为
开始
声明@rowcountint；
开始尝试
从Book中选择TOP 100*；
设置@rowcount=@@rowcount；
结束尝试
开始捕捉
从书本中选择前50个*；
设置@rowcount=@@rowcount；
端接
选择@rowcount；
从书中选择*
（@id\u book=id\u book或id\u book=id\u book）
和（@TanggalStart='ALL'或Convert（Varchar，entry\u date，112）>=@TanggalStart）和（@TanggalEnd='ALL'或Convert（Varchar，entry\u date，112）该函数在
选择上不起作用：

添加、删除或更改的行数

如果关联PDO语句执行的最后一条SQL语句是SELECT语句，则PDO:：CURSOR\u FWDONLY游标返回-1。PDO:：CURSOR\u可滚动游标返回结果集中的行数

因此，只需读取所有行，然后测试数组大小

while($row = $stmt->fetch())
{
    // create array
    $book_arr[]=array(
        "status" => true,
        "id_book" => $row['id_book'],
        "book_name" => $row['book_name'],
        "author" => $row['author'],
        "description" => $row['description'],
        "book_price" => $row['book_price'],
        "id_publication" => $row['id_publication'],
        "id_branch" => $row['id_branch'],
        "qty" => $row['qty'],
        "rental_qty" => $row['rental_qty'],
        "imagename" => $row['imagename'],
        "imagepath" => $row['imagepath'],
        "entry_date" => $row['entry_date'],
    );
}

if ($row = 0) {
    $book_arr=array(
        "status" => false,
        "message" => "Invalid Get Report Book!",
    );
}

是的，我正在使用PDO_SQLSRVi。看到了。这个问题的解决方案了吗？我已经研究过了，但仍然没有得到它的详细属性：PDOStatement:：$book_arr在C:\xampp\htdocs\library api\reportbook.php第42ok行。我的问题已经解决了。谢谢
while($row = $stmt->fetch())
{
    // create array
    $book_arr[]=array(
        "status" => true,
        "id_book" => $row['id_book'],
        "book_name" => $row['book_name'],
        "author" => $row['author'],
        "description" => $row['description'],
        "book_price" => $row['book_price'],
        "id_publication" => $row['id_publication'],
        "id_branch" => $row['id_branch'],
        "qty" => $row['qty'],
        "rental_qty" => $row['rental_qty'],
        "imagename" => $row['imagename'],
        "imagepath" => $row['imagepath'],
        "entry_date" => $row['entry_date'],
    );
}

if ($row = 0) {
    $book_arr=array(
        "status" => false,
        "message" => "Invalid Get Report Book!",
    );
}