is_infinite

is_infinite

Checks whether a float is infinite

bool **is_infinite** float $num

Returns whether the given is either or -. num``INF``INF

numThe float to check

true if is either or -, else false. num``INF``INF

Voorbeeld: example

<?php
$inf = 1e308 * 2;

var_dump($inf, is_infinite($inf));

$negative_inf = -$inf;

var_dump($negative_inf, is_infinite($negative_inf));
?>

float(INF)
bool(true)
float(-INF)
bool(true)

is_finite``is_nan