is_finite

is_finite - Whether a value is a legal finite number

bool is_finite( float $x )

is_finite() returns true if x is a finite number and false otherwise.

Parameters:

x - The number to process. It can be a scalar or an array.

Return Value:

true or false depending on whether x is a finite number. If x is an array, the return value will also be an array.

Version

1.0 and above.