PHP format string to numbers seperated by two decimal points

问题

User can input values in following format:

• 1.00
• 1
• 1,00

Now I need to return this values formated by using two decimal points (,). When I use:

number_format($request->amount, 2, ',','')

And use "1,00" as input I get this error:

Notice: A non well formed numeric value encountered

What's the best way to solve this and still be able to handle all three types of input?

Here's a short example:

input of user:|output:
1.00           1,00
1              1,00 
1,51           1,51

回答1:

The following should work:

$request->amount = str_replace(",", ".", $request->amount);
number_format($request->amount, 2, ',','');

回答2:

Try this :

number_format((int)$request->amount, 2, ',','');

来源：https://stackoverflow.com/questions/35923007/php-format-string-to-numbers-seperated-by-two-decimal-points