PHP MS SQL Count number of rows is empty
Question
I'm trying to put together a table that displays events by date range. Which works with the code below. My next step is pagination, learning as I go. From everything I've read, I must get the number of rows to determine if there is enough to begin a 'next page' to move on to the next step.
I'm stumped on this step. It seems my
$row_count = sqlsrv_num_rows( $stmt);
echo 'numRows: ',$row_count;
is not returning anything.
numRows: 'this is empty'
<head>
<title>Paginate</title>
</head>
<body>
<form method='get'>
<?PHP
$sql = "Select I.IncidentNumber, o.CaseCode , O.CaseDescription, V.HomeAddress
From tblIncident I
left join
tblIncidentType O
on O.IncidentNumber=I.IncidentNumber
left join
tblIncidentCustomer V
on V.IncidentNumber=I.IncidentNumber
Where IncidentDate between '01/01/2017' and '01/02/2017'
order by I.IncidentNumber";
$stmt = sqlsrv_query( $conn, $sql);
if( $stmt === false ) {
die( print_r( sqlsrv_errors(), true)) ;
}
/**
* Put resules in a table
*/
$stmt = sqlsrv_query($conn,$sql);
$row_count = sqlsrv_num_rows( $stmt);
echo 'numRows: ',$row_count;
echo "<table border='5' column width='700'><tr><th><center>Incident Number</center></th><th><center>CaseCode</center></th><th><center>Case Description</center></th><th><center>Home Address</center></th></><th></></tr>";
while( $row = sqlsrv_fetch_array($stmt, SQLSRV_FETCH_ASSOC) )
{
echo "<tr>";
echo "<td><center>" . $row['IncidentNumber']. "</center></td>";
echo "<td><center>" . $row['CaseCode']."</center></td>";
echo "<td><center>" . $row['CaseDescription']."</center></td>";
echo "<td><center>" . $row['HomeAddress']."</center></td>";
}
echo "</table>";
?>
</body>
</html>
I apologize in advance but I am trying to learn as I go but this has me stumped. I'm sure there is a duplicate with an answer but everything I have tried from the other QAs are not working. Any help you can give would be appreciated.
2 answers
solution1
0 2018-06-24 14:45:51
我认为它应该是“O.CaseCode”而不是“o.CaseCode”？
solution2
0 ACCPTED 2018-06-24 16:55:41
From the documentation : Function sqlsrv_num_rows() requires a client-side, static, or keyset cursor, and will return false if you use a forward cursor or a dynamic cursor (a forward cursor is the default). You may try with this:
...
$stmt = sqlsrv_query($conn, $sql, array(), array("Scrollable" => 'static'));
if( $stmt === false ) {
echo "Error (sqlsrv_query): ".print_r(sqlsrv_errors(), true);
exit;
}
$row_count = sqlsrv_num_rows($stmt);
if ($row_count === false) {
echo "Error (sqlsrv_num_rows)";
exit;
}
...
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