PHP asinh() 函数

asinh() 是预定义的 PHP 函数。它用于计算不同数字的反双曲正弦，并返回 arg 的反双曲正弦值。

语法

float asinh ( float $arg );

示例1

<?php
num=0;
echo "Your number is : ".num;
echo "<br>"."By using 'asinh()' function your number is :".(asinh($num));
?>

输出：

Your number is : 0
By using 'asinh()' function your number is :0

示例2

<?php
num=7;
echo "Your number is : ".num;
echo "<br>"."By using 'asinh()' function your number is :".(asinh($num));
?>

输出:

Your number is : 7
By using 'asinh()' function your number is :2.6441207610586

示例3

<?php
num=45;
echo "Your number is : ".num;
echo "<br>"."By using 'asinh()' function your number is :".(asinh($num));
?>

输出：

Your number is : 45
By using 'asinh()' function your number is :4.4999331042643

示例4

<?php
num=3.5;
echo "Your number is : ".num;
echo "<br>"."By using 'asinh()' function your number is :".(asinh($num));
?>

输出：

Your number is : 3.5
By using 'asinh()' function your number is :1.9657204716497