我正在尝试检查两个日期之间的sql表中的日期。如果查询结果为空,我试图显示一条消息。下面是我的代码
HTML:
<div class="result" id="result" name="result">
<?php echo $head1; ?> <?php echo $out; ?> <?php echo $head2; ?>
</div>
<div class="result" id="result1" name="result1">
<?php echo $out1; ?>
</div>
PHP代码:
if ($_POST['result_options'] == 'Data_Between_Dates'){
$startdate = $_POST['start_date'];
$enddate = $_POST['end_date'];
$sql ="Select date,select_bank,entry_type,income_cat,expense_cat,amount,expense_cat_sub
from wp_formdata
Where date BETWEEN '$startdate' AND '$enddate'
order by date";
$result = $conn -> query($sql);
if($result>=1){
$out = "";
while($row = $result ->fetch_assoc()){
$out .= "<tr><td>".$row["date"]."</td><td>".$row["select_bank"]."</td><td>".$row["entry_type"]."</td><td>".$row["income_cat"]."</td><td>".$row["expense_cat"]."</td><td>".$row["expense_cat_sub"]."</td><td>".$row["amount"]."</td></tr>";
}
}
else {
$out1 = "No Result Found";
}
}
我可以获取非空日期,但是以某种方式$out1 = "No Result Found";
无法正常工作。这里有什么建议吗?
答案 0 :(得分:0)
您可以使用$result->num_rows
检查查询是否返回了任何记录。它返回行数。
$result = $conn->query($sql);
if ($result->num_rows > 0) {
$out = "";
while ($row = $result->fetch_assoc()) {
$out .= "<tr><td>" . $row["date"] . "</td><td>" . $row["select_bank"] . "</td><td>" . $row["entry_type"] . "</td><td>" . $row["income_cat"] . "</td><td>" . $row["expense_cat"] . "</td><td>" . $row["expense_cat_sub"] . "</td><td>" . $row["amount"] . "</td></tr>";
}
} else {
$out1 = "No Result Found";
}