My friend and I are at programming camp, and we were messing around with some php. We both noticed something weird though, and we weren't able to figure out the reason for our error. For some reason, adding a parentheses changes the output of our vardump(). What is going on here?
var_dump((bool) (2==5)); //returns bool(false)
var_dump((bool) 2==5); //returns bool(true)
分享 Type casting applies to the first entity, or operand.
(2==5) since it's wrapped in parentheses is interpreted together. So 2==5 is false, so (bool) false is still false.
The second is transforming 2 to a bool, which is true and a loose comparsion of true to 5 is also true since any integer other than 0 is evaluated loosely as true.
This comes down to:
2 == true
5 == true
