If语句(PHP)

Question

我需要If语句(php)来：

if (Modem = ModemNotReceived) and (CheckModem = Done) 

    Total + 50

And

    if (Modem = ModemReceived) and (CheckModem = Done)

    Total - 50

我怎么能在一次陈述中做到这一点？

我的桌子：

| ID |       Modem          | CheckModem | Total
------------------------------------------------
| 1  |   ModemReceived      |    Done    | 120
------------------------------------------------
| 2  |   ModemNotReceived   |    Null    | 90
------------------------------------------------
| 3  |   ModemReceived      |    Null    | 100

Answer 1

如果我正确理解你的意思，这段代码就是你的意思：

<?php 
if ($Modem == 'ModemNotReceived' && $CheckModem == 'Done') {
    $Total += 50;
} else if ($Modem == 'ModemReceived') && $CheckModem == 'Done' {
    $Total -= 50;
}
?>