转换01,02,03,04 .. 09到1,2,3,4 ... 9

Question

Hay how can I convert

01 to 1
02 to 2

all the way to 9?

Thanks

Answer 1

I assume the input is a string?

$str = "01";
$anInt = intval($str);

You may think that the leading 0 would mean this is interpreted as octal, as in many other languages/APIs. However the second argument to intval is a base. The default value for this is 10. This means 09->9. See the first comment at the intval page, which states that the base deduction you might expect only happens if you pass 0 in as the base.