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PHP is_infinite() Function

< PHP Math Reference

Example

Check whether a value is infinite or not:

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

Definition and Usage

The is_infinite() function checks whether a value is infinite or not.

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

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

Syntax

is_infinite(value);

Parameter	Description
value	Required. Specifies the value to check

Technical Details

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

< PHP Math Reference