PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8
is_finite - Finds whether a value is a legal finite number

is_finite( float$num ): bool

Checks whether num is a legal finite on this platform.



The value to check

Return Values

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

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Example of is_finite

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Function is_finite:

Mathematical Functions Functions

Most used PHP functions