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PHP acosh () function

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Examples

Returns the inverse hyperbolic cosine different numbers:

<?php
echo(acosh(7) . "<br>");
echo(acosh(56) . "<br>");
echo(acosh(2.45));
?>

Running instance »

Definition and Usage

acosh () function returns the inverse hyperbolic cosine of a number.


grammar

acosh( number );

参数 描述
number 必需。规定一个数。

technical details

return value: inverse hyperbolic cosine of number.
Return type: Float
PHP version: 4.1+
PHP Update Log: PHP 5.3: acosh () function is available on all platforms.


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