"; echo is_infinite(log(0)) . "
"; echo is_infinite(2000); ?> ```"> "; echo is_infinite(log(0)) . "
"; echo is_infinite(2000); ?> ```" />
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PHP is_infinite() Function

PHP Math Reference Manual

Example

Determine if a value is infinite:

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

Definition and Usage

The is_infinite() function checks if a value is infinite.

If the specified value is finite, the function returns TRUE (1). Otherwise, it returns FALSE (no output).

A value is considered infinite if it is within the range allowed by PHP floating-point numbers on the native platform.


Syntax

Parameter Description
value Required. The value to check.

Technical Details

Return Value: Returns TRUE if the value is infinite. Otherwise, returns FALSE.
Return Type: Boolean
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PHP Version: 4.2+
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