is_infinite()

The is_infinite() function evaluates whether the value is infinite or not and returns a boolean value.

Syntax

$result = is_infinite(value);

Returns 1 if value is infinite, else returns false.

Example

The example below demonstrates the use of the is_infinite() function to check whether a number is infinite or not.

<?php
  $value = log(0);
  $result = is_infinite($value);
  echo $result;
?>

This example results in the following output:

1