is_finite

is_finite

Checks whether a float is finite

bool **is_finite** float $num

Returns whether the given is a finite float. num

A finite float is neither (), nor infinite (). NAN``is_nan``is_infinite

numThe float to check

true if is none of , , -, else false. num``NAN``INF``INF

Voorbeeld: example

<?php
$float = 1.2345;
var_dump($float, is_finite($float));

$nan = sqrt(-1);
var_dump($nan, is_finite($nan));

$inf = 1e308 * 2;
var_dump($inf, is_finite($inf));
?>

float(1.2345)
bool(true)
float(NAN)
bool(false)
float(INF)
bool(false)

is_infinite``is_nan