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我目前使用PHP来连接我的ms sql数据库中的表出现在我的网页上。然而,表中出现即时通讯问题与我的sql表中的空日期字段。无法回复日期空字段
该表是车辆维修车库。
create table [VEHICLE_STATUS](
[STATUS_ID] [int] identity (1,1) not null,
[VEHICLE_ID] [INT] not null,
[REPAIR_START_DATE] [DATE] not null,
[REPAIR_END_DATE] [DATE] not null,
[DESCRIPTION] [nvarchar] (200) not null
);
但是并非所有车辆都在维修,因此没有维修开始或结束日期。
我试图改变日期字段更改为“可用”,而不是空
,来了就是错误;检查
Fatal error: Call to a member function format() on null in C:\xampp\htdocs\view.php on line 57
<?php
$server = "\SQLEXPRESS";
$options = array("Database"=>"test");
$conn = sqlsrv_connect($server, $options);
if(!$conn) die(print_r(sqlsrv_errors(), true));
$query = "select * from VW_VEHICLE_STATUS";
$sql = sqlsrv_query($conn, $query);
echo "<table >";
echo "<tr>";
echo "<td style='border:1px solid black;Font-size=18;Font-weight=bold'>";
echo "MAKE";
echo "</td>";
echo "<td style='border:1px solid black;Font-size=18;Font-Weight=bold'>";
echo "MODEL";
echo "</td>";
echo "<td style='border:1px solid black;Font-size=18;Font-Weight=bold'>";
echo "REGISTRATION";
echo "</td>";
echo "<td style='border:1px solid black;Font-size=18;Font-Weight=bold'>";
echo "REPAIR_START_DATE";
echo "</td>";
echo "<td style='border:1px solid black;Font-size=18;Font-Weight=bold'>";
echo "REPAIR_END_DATE";
echo "</td>";
echo "<td style='border:1px solid black;Font-size=18;Font-Weight=bold'>";
echo "DESCRIPTION";
echo "</td>";
echo "</tr>\n";
while ($row = sqlsrv_fetch_array($sql))
{
echo "<tr>";
echo "<td style='border:1px solid black'>";
echo $row['MAKE'];
echo "</td>";
echo "<td style='border:1px solid black'>";
echo $row['MODEL'];
echo "</td>";
echo "<td style='border:1px solid black'>";
echo $row['REGISTRATION'];
echo "</td>";
echo "<td style='border:1px solid black'>";
echo $row['REPAIR_START_DATE']->format("Y-M-d");
echo "</td>";
echo "<td style='border:1px solid black'>";
echo $row['REPAIR_END_DATE']->format("Y-M-d"); ;
echo "</td>";
echo "<td style='border:1px solid black'>";
echo $row['DESCRIPTION'];
echo "</td>";
echo "</tr>\n";
}
echo "</table>";
sqlsrv_close($conn);
?>
当您的错误消息是PHP错误时,显示某些sql的意义何在? “嘿,医生,我摔断了腿,它到处都是血和骨碎片,下面是我的车的图片,所以你可以弄清楚如何修理我” –
@ Jane - 你需要考虑在你的PHP代码中显示错误并将其标记为PHP以获得更好的响应 – techspider
在使用日期列的格式之前,最可能发生的问题可能不是检查空值 – techspider