Why is the semicolon optional in the last statement in php?

Question

I was surprised when I ran the following code in my editor:

As it can be easily see

Answer 1

That is because the semicolon is not a symbol to terminate a statement.

It looks like that because it occurs almost always at the end of a statement.

Note the almost always... could be a hint.

Trying to get rid of the asymmetry, we can say it is always between statements!

That leads directly to the real meaning of the semicolon: it does not terminate statements - it separates statements.
Obviously, after the last statement, there is nothing to separate.

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(Most languages allow a semicolon at the end of a block anyway, to prevent the related trivial errors. It can be done by discarding the semicolon, or, more explicit, by inserting a command that does nothing after the semicolon. )