is_infinite

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

is_infinite —Checks whether a float is infinite

is_infinite(float$num):bool

Returns whether the givennum is eitherINF or -INF.

true ifnum is eitherINF or -INF, elsefalse.

Example #1is_infinite() example

<?php
$inf=1e308*2;

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

$negative_inf= -$inf;

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

The above example will output:

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

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