php-scalar

Scalar type hinting for PHP

function foo(int $bar) {
    echo "bar is $bar\n";
}
foo(123); // works
foo(4.56); // throws an error

Types:

• bool
• int
• float
• num (either int of float)
• string
• scalar (any of the above types)
• object (of any class)
• resource

Note that you cannot specify default values for scalar types because the parser doesn't support it.
This extension was a quick and dirty proof-of-concept. A proper implementation will require altering the parser which can't be done from an extension (without stupid amounts of work).