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PHP cosh () function

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Examples

Returns the number of different hyperbolic cosine:

<?php
echo(cosh(3) . "<br>");
echo(cosh(-3) . "<br>");
echo(cosh(0) . "<br>");
echo(cosh(M_PI) . "<br>");
echo(cosh(2*M_PI));
?>

Running instance »

Definition and Usage

cosh () function returns the hyperbolic cosine of a number, defined as ((exp (number) + exp (-number)) / 2).


grammar

cosh( number );

参数 描述
number 必需。规定一个数。

technical details

return value: number hyperbolic cosine.
Return type: Float
PHP version: 4.1+


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