(PHP 4 >= 4.1.0, PHP 5, PHP 7)
asinh — Inverse hyperbolic sine
$arg
    ) : float
   Returns the inverse hyperbolic sine of
   arg, i.e. the value whose
   hyperbolic sine is arg.
  
argThe argument to process
   The inverse hyperbolic sine of arg 
  
| Version | Description | 
|---|---|
| 5.3.0 | This function is now available on all platforms |