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is_finite

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

is_finiteFinds whether a value is a legal finite number

Description

is_finite ( float $val ) : bool

Checks whether val is a legal finite on this platform.

Parameters

val

The value to check

Return Values

true if val is a legal finite number within the allowed range for a PHP float on this platform, else false.

See Also

© 1997–2020 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.is-finite.php