How to write the calculation formula of power in php

This article mainly explains "how to write the calculation formula of power in php". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn how to write the calculation formula of several powers in php.

The formula for calculating the power in PHP is "$x=pow (base, index);", and the value of the variable x is the result of the power calculation. The pow () function calculates and returns the result of the specified number to the specified power, the first parameter specifies the bottom of the exponential expression, the second parameter specifies the power of the exponential expression, and if it cannot be calculated, the result returned is NAN.

This article operating environment: Windows10 system, PHP7.1 version, Dell G3 computer.

The calculation Formula of several Power in php

The calculation formula is as follows:

$x=pow (base, index)

Function: the function of the pow () function is to calculate a number to the nth power and return it.

Syntax:

Pow (XQuery Y)

Parameters:

X represents the number to be processed

Y represents the n value in the specified n power.

Description: returns the Y power of X. if the parameter is correct, the function will return a numeric value. If it cannot be calculated, it will return NAN.

Examples are as follows:

Output result:

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