我收到此错误消息“未定义偏移量:0”。是什么原因以及如何解决? 这里是我的代码:php mysql错误未定义偏移量:0
<?php
$rows= mysqli_query ($con,"SELECT COUNT(Mobile) AS count FROM data Where Blood = '$bloodGroup'");
$count = mysqli_fetch_assoc($rows ) ;
$count = $count[0]['count'];
?>
'$ count = $ count ['count']' –
了解有关准备好的语句以防止SQL注入 – Jens