Scalar Types

Scalar types refer to the basic data types that hold a single value.

PHP scalar types include the following:

Integer (int): integers are whole numbers without decimal points.

Float (float): floats, also known as floating-point numbers or doubles, represent decimal numbers.

String (string): strings are sequences of characters enclosed in quotes (single or double).

Boolean (bool): booleans have two possible values: true or false.

Note that null is not considered a scalar type, and is often behaving differently.

<?php
function gen_one_to_three() {
    for ($i = 1; $i <= 3; $i++) {
        // Note that $i is preserved between yields.
        yield $i;
    }
}

?>

Documentation

See also PHP 7 Scalar Type Declaration

Related : Type System, Special Types, String, Boolean, Floating Point Numbers, integer, Alias Types

Added in PHP 7.0