Return the inverse hyperbolic sine of different numbers:
<?phpecho(asinh(7) . "<br>");echo(asinh(56) . "<br>");echo(asinh(2.45));?>The asinh() function returns the inverse hyperbolic sine of a number.
asinh( number );
| parameter | describe |
|---|---|
| number | Required. Specify a number. |
| Return value: | The inverse hyperbolic sine of number . |
|---|---|
| Return type: | Float |
| PHP version: | 4.1+ |
| PHP change log: | PHP 5.3: asinh() function is available on all platforms. |