PHP 8.1.0 RC 4 available for testing

is_infinite

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

is_infiniteFinds whether a value is infinite

Descrierea

is_infinite ( float $num ) : bool

Returns true if num is infinite (positive or negative), like the result of log(0) or any value too big to fit into a float on this platform.

Parametri

num

The value to check

Valorile întoarse

true if num is infinite, else false.

A se vedea și

  • is_finite() - Finds whether a value is a legal finite number
  • is_nan() - Finds whether a value is not a number

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User Contributed Notes 1 note

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JUAN MORALES
3 months ago
to reproduce this, try

<?php

var_dump
(is_infinite(log(0)));
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