Can you explain what the Integer data type is in PHP?

In PHP, the Integer data type represents a whole number without a fractional part. It can be either positive or negative, including zero. The size and range of integer values depend on the platform (usually 32-bit or 64-bit). For example:

$number = 42; // integer type
$negative = -15;

Integer is used to store numeric values without decimal points and supports arithmetic operations.