Floating Point Numbers¶

Floating point numbers (also known as “floats”, “doubles”, or “real numbers”) can be specified using a decimal dot and a mantis.

They may also use a number separator _.

Floats used be called real, though this was abandoned progressively, since PHP 7.0.

<?php
$a = 1.234;
$b = 1.2e3;
$c = 7E-10;
$d = 1_234.567; // as of PHP 7.4.0
?>