发布这样一个简单的问题我感到很尴尬，但它是在13日星期五，而且我不知道它是否会对我的代码产生某种超自然的影响！
这是我的if语句;
Template template = myServiceReferenceClient.GetTemplate();
以下代码;
if ($invoice_grand_total > floatval($payment_details['TotalPayments'])) {
返回;
echo $invoice_grand_total . ' = ' . floatval($payment_details['TotalPayments'])
var_dump;
6.88 = 6.88
返回;
echo $outstanding_invoices_count . ' invoice_grand_total = ' . var_dump($invoice_grand_total) . '<br/>';
echo $outstanding_invoices_count . ' TotalPayments = ' . var_dump(floatval($payment_details['TotalPayments'])) . '<br/>';
不使用var_dump返回;
float(18) 0 invoice_grand_total =
float(18) 0 TotalPayments =
float(199) 0 invoice_grand_total =
float(199) 0 TotalPayments =
float(125) 0 invoice_grand_total =
float(125) 0 TotalPayments =
float(60) 0 invoice_grand_total =
float(60) 0 TotalPayments =
float(55) 0 invoice_grand_total =
float(55) 0 TotalPayments =
float(60) 0 invoice_grand_total =
float(60) 0 TotalPayments =
float(10) 0 invoice_grand_total =
float(10) 0 TotalPayments =
float(3.64) 0 invoice_grand_total =
float(3.64) 0 TotalPayments =
float(295) 0 invoice_grand_total =
float(295) 0 TotalPayments =
float(25.45) 0 invoice_grand_total =
float(25.45) 0 TotalPayments =
float(110) 0 invoice_grand_total =
float(110) 0 TotalPayments =
float(2.41) 0 invoice_grand_total =
float(2.41) 0 TotalPayments =
float(0.04) 0 invoice_grand_total =
float(0.04) 0 TotalPayments =
float(25.45) 0 invoice_grand_total =
float(25.45) 0 TotalPayments =
float(6.01) 0 invoice_grand_total =
float(6.01) 0 TotalPayments =
float(29.09) 0 invoice_grand_total =
float(29.09) 0 TotalPayments =
float(6.88) 0 invoice_grand_total =
float(6.88) 0 TotalPayments =
如果它有帮助，这是完整的代码块;
0 invoice_grand_total = 18
0 TotalPayments = 18
0 invoice_grand_total = 199
0 TotalPayments = 199
0 invoice_grand_total = 125
0 TotalPayments = 125
0 invoice_grand_total = 60
0 TotalPayments = 60
0 invoice_grand_total = 55
0 TotalPayments = 55
0 invoice_grand_total = 60
0 TotalPayments = 60
0 invoice_grand_total = 10
0 TotalPayments = 10
0 invoice_grand_total = 3.64
0 TotalPayments = 3.64
0 invoice_grand_total = 295
0 TotalPayments = 295
0 invoice_grand_total = 25.45
0 TotalPayments = 25.45
0 invoice_grand_total = 110
0 TotalPayments = 110
0 invoice_grand_total = 2.41
0 TotalPayments = 2.41
0 invoice_grand_total = 0.04
0 TotalPayments = 0.04
0 invoice_grand_total = 25.45
0 TotalPayments = 25.45
0 invoice_grand_total = 6.01
0 TotalPayments = 6.01
0 invoice_grand_total = 29.09
0 TotalPayments = 29.09
0 invoice_grand_total = 6.88
0 TotalPayments = 6.88
为什么// outstanding invoice details
echo '<fieldset>
<legend>Outstanding Invoice Details</legend>';
echo '<table class="solid" style="margin:5px;">';
echo '<tr>
<th>Invoice #</th>
<th>Date</th>
<th>Invoice Total</th>
<th>Amount Paid</th>
<th>Amount Due</th>
</tr>';
$invoice_grand_total = 0.00;
$outstanding_invoices_count = 0;
$invoice_details_query = mysqli_query($con, "SELECT * FROM accounts_invoice WHERE invoice_customer_type='" . $invoice_customer_type . "' AND invoice_customer='" . $invoice_customer . "' AND invoice_posted='1' AND invoice_tenancy_id='" . $tenancy_id . "'") or die(mysql_error());
while($invoice_details_row = mysqli_fetch_array( $invoice_details_query )) {
$invoice_grand_total = $invoice_details_row['invoice_total_amount_exc_vat'] + $invoice_details_row['invoice_total_vat_amount'];
$payment_details_query = mysqli_query($con, "SELECT SUM(invoice_payment_amount) AS TotalPayments FROM accounts_invoice_payment WHERE invoice_payment_invoice_id='" . $invoice_details_row['invoice_id'] . "'") or die(mysql_error());
$payment_details = mysqli_fetch_array( $payment_details_query );
echo $outstanding_invoices_count . ' invoice_grand_total = ' . var_dump($invoice_grand_total) . '<br/>';
echo $outstanding_invoices_count . ' TotalPayments = ' . var_dump(floatval($payment_details['TotalPayments'])) . '<br/>';
if (floatval($invoice_grand_total) > floatval($payment_details['TotalPayments'])) {
$outstanding_invoices_count++;
echo '<tr>
<td>' . $invoice_grand_total . ' = ' . floatval($payment_details['TotalPayments']) . '</td>
<td><a href="view_invoice.php?invoice_id=' . $invoice_details_row['invoice_id'] . '" target="_blank">' . $invoice_details_row['invoice_id'] . '</a></td>
<td>' . ConvertDate($invoice_details_row['invoice_date']) . '</td>
<td>£' . number_format($invoice_grand_total, 2, '.', ',') . '</td>
<td>£' . number_format($payment_details['TotalPayments'], 2, '.', ',') . '</td>
<td>£' . number_format(($invoice_grand_total - $payment_details['TotalPayments']), 2, '.', ',') . '</td>
</tr>';
}
}
if ($outstanding_invoices_count==0) { echo '<tr><td colspan="10">There are no outstanding invoices.</td></tr>'; }
echo '</table>';
if ($outstanding_invoices_count!=0) {
echo '<table class="nobord">';
echo '<tr><td><span class="red">The above invoices are outstanding for this landlord. Click <a href="add_invoice_payment.php?invoice_customer_type=1&invoice_customer=' . $invoice_customer . '&invoice_tenancy_id=' . $tenancy_id . '">here</a> to add an invoice payment.</span></td></tr>';
echo '</table>';
}
echo '</fieldset>';
的if块在6.88 > 6.88条件下运行？
溶液;
我将if语句更改为;
6.88 = 6.88答案 0 :(得分：3)
通常你永远不会像这样比较浮点值的相等性，你需要使用最小的可接受差异：