How to calculate several powers in php

In PHP, you can use the pow function to calculate the power of several times. The syntax of this function is such as "pow(x,y)", which means returning the power of x raised to the yth power. If possible, this function will return an integer. , a warning will be issued if the exponentiation cannot be calculated.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

pow() function returns x raised to the yth power.

Syntax

pow(x,y)

Parameters

x Required. A number.

y Required. A number.

Description

Returns the power of x raised to the power of y. This function returns an integer if possible.

If the power cannot be calculated, a warning will be issued and pow() will return false. Starting with PHP version 4.2.0, pow() does not generate any warnings.

Example

<?php
echo pow(4,2);
echo pow(6,2);
echo pow(-6,2);
echo pow(-6,-2);
echo pow(-6,5.5);
?>

Output is similar:

16
36
36
0.0277777777778
-1.#IND

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