cosh()
cosh() — Hyperbolic cosine.
Built-in function of PHP 8.5. The manual lists it as available in PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.
What it does
Returns the hyperbolic cosine of num, defined as (exp($num) + exp(-$num))/2.
Signature
cosh(float $num): float
Parameters
| Parameter | Type | What it takes |
|---|---|---|
| $num | float | The argument to process |
Return value
The hyperbolic cosine of num
Example
The PHP manual ships no example for cosh(); the signature and the parameter table above are the contract.
See also
cos(), acosh(), sinh(), tanh()
All PHP 8.5 built-in functions
Reference card built from the PHP manual page cosh() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.