PHP sinh() 函数

PHP sinh() 函数是预定义的数学函数。它用于返回一个数的双曲正弦值。它等于 (exp(num) – exp(-num))/2)。

语法

    float sinh ( float $arg );

示例1

<?php
  n=3;
  echo "Your number is:".n;
  echo "<br>"."By using 'sinh()' function your value is:".(sinh($n) . "<br>");
?>

输出:

Your number is:3
By using 'sinh()' function your value is:10.01787492741

示例2

<?php
  n=(-3);
  echo "Your number is:".n;
  echo "<br>"."By using 'sinh()' function your value is:".(sinh($n) . "<br>");
?>

输出：

Your number is:-3
By using 'sinh()' function your value is:-10.01787492741

示例3

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

输出:

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

示例4

<?php
  n=M_PI;
  echo "Your number is: M_PI";
  echo "<br>"."By using 'sinh()' function your value is:".(sinh(n) . "<br>");
?>

输出:

Your number is: M_PI
By using 'sinh()' function your value is:11.548739357258

示例5

<?php
  n=M_PI_2;
  echo "Your number is: M_PI_2";
  echo "<br>"."By using 'sinh()' function your value is:".(sinh(n) . "<br>");
?>

输出：

Your number is: M_PI_2
By using 'sinh()' function your value is:2.3012989023073