asinh in PHP December 5, 2021 by Codingtube team Synatx of asinh float asinh(float value) Returns the inverse hyperbolic sine of value. <?php echo(asinh(7) . "<br>"); echo(asinh(56) . "<br>"); echo(asinh(2.45)); ?> 2.64412076105864.71857858115181.6284998192842