How to implement factorial from 1 to 10 in php

php method to implement factorial from 1 to 10: 1. Create a PHP sample file; 2. Assign the variable result to 1; 3. Pass "for($i=2;$i<=$n; $i )" loop statement will loop i from 2 and add 1 successively; 4. Define the "$result*=$i;" formula; 5. Output the factorial result of 10 through echo.

The operating environment of this tutorial: Windows 10 system, PHP version 8.1, DELL G3 computer

How to achieve 1 to 10 in php factorial?

The implementation code is as follows:

<?php

$n=10;
$result=1; //先赋值变量result为1
for($i=2;$i<=$n;$i++) //这是循环语句 i从2开始循环 逐次加1 直到i<=n
    $result*=$i; //等同于$result=$result*$i 这是一个一个的乘机return
echo $result;

The output result is:

3628800

Related expansion:

The factorial is Keystone Card The arithmetic symbol invented by Christian Kramp (1760-1826) in 1808 is a mathematical term.

The factorial of a positive integer is the product of all positive integers less than and equal to the number, and the factorial of 0 is 1. The factorial of a natural number n is written n!. In 1808, Christian Carman introduced this notation.

That is, n!=1×2×3×...×(n-1)×n. Factorial can also be defined recursively: 0!=1, n!=(n-1)!×n.

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