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PHP Quiz PHP CertificatePHP is_infinite() Function
Complete PHP Math Reference
Definition and Usage
The is_infinite() function returns true if the specified value is an infinite number, otherwise it returns nothing.
The value is infinite if it is too big to fit into a PHP float on this platform.
Syntax
is_infinite(x)
| Parameter | Description |
|---|---|
| x | Required. The value to check |
Example
<?php
echo is_infinite(2) . "<br />";
echo is_infinite(log(0)) . "<br />";
echo is_infinite(2000);
?>
echo is_infinite(2) . "<br />";
echo is_infinite(log(0)) . "<br />";
echo is_infinite(2000);
?>
The output of the code above will be:
1
Complete PHP Math Reference
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