PHP exp() function

by Online Tutorials Library July 22, 2022

PHP exp() function

The exp() function is used to calculate the exponent of e. It returns e raised to the power of x (ex) where ‘e’ is the base of the natural system of logarithms and x is the number passed to it.

Syntax:

Name	Description	Return type
x	Specifies the exponent	float

Example1:

PHP math exp function

 <?php $v1= 0; $v2=1; $v3=2.5; $res1=exp($v1); $res2=exp($v2); $res3=exp($v3); echo “exponent of $v1 is = $res1<br />”; echo “exponent of $v2 is = $res2<br />”; echo “exponent of $v3 is = $res3<br />”; ?>  

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Output:

exponent of 0 is = 1 exponent of 1 is = 2.718281828459 exponent of 2.5 is = 12.182493960703

Note: ‘e’ is the base of the natural system of logarithms, or approximately 2.718282.

Example2

 <?php  for($i=-3;$i<=3;$i++)     echo ‘The exponent value of e^’.$i.’ = ‘.exp($i).”<br>”;  ?>  

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Output:

The exponent value of e^-3 = 0.049787068367864 The exponent value of e^-2 = 0.13533528323661 The exponent value of e^-1 = 0.36787944117144 The exponent value of e^0 = 1 The exponent value of e^1 = 2.718281828459 The exponent value of e^2 = 7.3890560989307 The exponent value of e^3 = 20.085536923188

Next TopicPHP Math

PHP exp() function

PHP exp() function

Syntax:

Example1:

Note: ‘e’ is the base of the natural system of logarithms, or approximately 2.718282.

Example2

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