问题描述
我对 PHP 一点也不熟悉，有一个简短的问题.
I am not familiar with PHP at all and had a quick question.
我有 2 个变量 pricePerUnit 和 InvoicedUnits.这是将这些设置为值的代码:
I have 2 variables pricePerUnit and InvoicedUnits. Here's the code that is setting these to values:
$InvoicedUnits = ((string) $InvoiceLineItem->InvoicedUnits);
$pricePerUnit = ((string) $InvoiceLineItem->PricePerUnit);
如果我输出这个，我会得到正确的值.假设 5000 发票单位和 1.00 价格.
If I output this, I get the correct values. Lets say 5000 invoiced units and 1.00 for price.
现在，我需要显示花费的总金额.当我将这两个相乘时它不起作用(正如预期的那样，这些是字符串).
Now, I need to show the total amount spent. When I multiply these two together it doesn't work (as expected, these are strings).
但我不知道如何在 PHP 中解析/转换/转换变量.
But I have no clue how to parse/cast/convert variables in PHP.
我该怎么办?
推荐答案
$rootbeer = (float) $InvoicedUnits;
应该为你做.查看 Type-Juggling.您还应该阅读 字符串转换为数字.
Should do it for you. Check out Type-Juggling. You should also read String conversion to Numbers.
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