is_finite() function in PHP

The is_finite() function checks if a value is finite or not. It Returns true if num is a finite number, else it Returns false.

Syntax

is_finite(num)

Parameters

• num − The number to be checked.

Return

The is_finite() function Returns true if num is a finite number, else it Returns false.

Example

<?php
   echo is_finite(1);
?>

Output

1

Let us see another example −

Example

<?php
   echo is_finite(log(0));
?>

Output