Question

$invoiceTotal = $settings['Setting']['currency'] . $thisInvoice['Invoice']['invoice_total'];

$bedrag = $settings['Setting']['currency'] . number_format($thisInvoice['Payment']['0']['amount'], 2, '.', ',');

$openbedrag = $invoiceTotal - $bedrag;

//$invoiceTotal = 2 
//$bedrag = 1

为什么$openbedrag = $invoiceTotal - $bedrag;无效？

这是一个简单的计算，为什么它不计算这个变量？

输出0 -_-'

更新问题

$invoiceTotal = $settings['Setting']['currency'].$thisInvoice['Invoice']['invoice_total'];
$bedrag = $settings['Setting']['currency'].number_format($thisInvoice['Payment']['0']['amount'], 2, '.', ',');
$openbedrag2 = $thisInvoice['Invoice']['invoice_total'] - $thisInvoice['Payment']['0']['amount'];
$openbedrag = $settings['Setting']['currency'].$openbedrag2;

货币集€

Answer 1

您需要对原始数字进行算术运算，而不是格式化数字。

$openbedrag = $thisInvoice['Invoice']['invoice_total'] - $thisInvoice['Payment']['0']['amount'];

Answer 2

转换为整数： -

$openbedrag = ($invoiceTotal * 1.0) - ($bedrag * 1.0);

Answer 3

如果 $ settings ['Setting'] ['currency'] 此包含符号，则请避免使用 $ settings ['Setting'] ['currency'] 你的计算时间。所以你的计算如下： -

$invoiceTotal =  $thisInvoice['Invoice']['invoice_total'];

$bedrag =  $thisInvoice['Payment']['0']['amount'];

$openbedrag = $invoiceTotal - $bedrag;

$openbedrag =  $settings['Setting']['currency'].number_format($openbedrag, 2, '.', ',');

注意： - 在计算时间内也不要使用number_format。使用它吃显示时间是指在最终输出中计算后。

无法计算值

3 个答案: