PHP，我如何在一个开关语句中计算同一事物的多个参数?

Question

我正在制作一个PHP时间转换器，可以将时间从天，小时，分钟转换为秒。我需要使用argv和switch语句。然而，它并没有真正转换相同参数的倍数。例如:input:php time.php 2m 2m输出:120 Seconds。应该是240秒。

我试过使用count。这是可行的，但前提是你们有相同的论点。当你有小时，分钟，天，秒。在一起是行不通的。这是我当前的代码，它可以使用每个参数

<?php
//variables
$time = implode(" ", $argv);
$timearray = (explode(" ", $time));
$timeday = 0;
$timehour = 0;
$timemin = 0;
$timesec = 0;
//loop
foreach ($timearray as $time) {
$letter = substr($time, -1);
$aantal = substr($time, 0, -1);
//switch
switch ($letter) {
case "d":
$timeday = $aantal * 86400;
break;
case "u":
$timehour = $aantal * 3600;
break;
case "m":
$timemin = $aantal * 60;
break;
case "s":
$timesec = $aantal * 1;
break;
}
$total = ($timeday + $timehour + $timemin + $timesec);
}
echo $total  . " Seconds" . PHP_EOL;

我不知道怎么修理它。

Answer 1

您可以将其简化很多:

<?php
array_shift($argv);
$total = 0;
foreach ($argv as $time) {
$letter = substr($time, -1);
$aantal = substr($time, 0, -1);
switch ($letter) {
case "d":
$total += $aantal * 86400;
break;
case "u":
$total += $aantal * 3600;
break;
case "m":
$total += $aantal * 60;
break;
case "s":
$total += $aantal * 1;
break;
}
}
echo $total  . " Seconds" . PHP_EOL;