PHP is_finite()Function
Examples
Determine whether a value is finite:
<?php
echo is_finite(2) . "<br>";
echo is_finite(log(0)) . "<br>";
echo is_finite(2000);
?>
echo is_finite(2) . "<br>";
echo is_finite(log(0)) . "<br>";
echo is_finite(2000);
?>
Run Example »
Definition and Usage
The is_finite() function determines whether a value is finite.
If the specified value is finite, the function returns true (1). Otherwise, it returns false/nothing.
If the value is within the range allowed for PHP float numbers on the local platform, then the value is finite.
Syntax
is_finite(value);
| Parameter | Description |
|---|---|
| value | Required. Specifies the value to check. |
Technical Details
| Return value: | Ifvalueit is finite, returns TRUE. Otherwise, returns FALSE. |
|---|---|
| Return type: | Boolean |
| PHP version: | 4.2+ |
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