is_infinite(): Finds whether a value is infinite or not
Check whether a float is infinite
is_infinite() checks whether a floating-point result represents positive or negative infinity.
$value = INF;
var_dump(is_infinite($value)); // bool(true)
Use is_infinite() when a calculation may overflow to INF or -INF.
var_dump(is_infinite(2.0)); // bool(false)
var_dump(is_infinite(INF)); // bool(true)
var_dump(is_infinite(-INF)); // bool(true)
var_dump(is_infinite(log(0))); // bool(true)
bool is_infinite(float $num)| Parameter | DESCRIPTION |
|---|---|
$input | Required : Number to check. |
Returns true only for INF or -INF; finite values and NAN return false.
Math Functions is_finite(): to findout legal finite number or not is_nan(): check NAN
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