What is the size of a bool in PHP?

问题:

What is the size of a bool in PHP?

For an int, it's easy to determine

echo PHP_INT_SIZE;

I got 4 so 8 bytes or 32 bits. What about for a bool type? Thanks.

回答1:

The size of a bool can be found by looking at the php source directory Zend/zend_types.h:

typedef unsigned char zend_bool;

With the size of unsigned char being 1 byte.