PHP is_finite() Function

Check whether a value is finite or not:

<?php
echo is_finite(2) . "<br>";
echo is_finite(log(0)) . "<br>";
echo is_finite(2000);
?>

Definition and Usage

The is_finite() function checks whether a value is finite or not.

This function returns true (1) if the specified value is a finite number, otherwise it returns false/nothing.

The value is finite if it is within the allowed range for a PHP float on this platform.

is_finite( value);

Parameter	Description
value	Required. Specifies the value to check

Return Value:	TRUE if value is a finite number, FALSE otherwise
Return Type:	Boolean
PHP Version:	4.2+