PHP程序计算一个数的阶乘中末尾零的个数
阶乘是什么？
The factorial of a non-negative integer, denoted by the symbol "!", is the product of all positive integers less than or equal to that number. In other words, the factorial of a number is obtained by multiplying that number by all the positive integers below it.
For example, the factorial of 5 is calculated as:
5! = 5 x 4 x 3 x 2 x 1 = 120
同样地，0的阶乘被定义为1：
0! = 1
Factorials are often used in mathematics and combinatorics to count permutations, combinations, and arrangements of objects. They also have applications in probability, calculus, and various other areas of mathematics.
PHP Program to Count Trailing Zeroes in Factorial of a Number
在一个数的阶乘中，尾随零指的是阶乘的十进制表示中连续零的个数。
例如 10! = 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1
执行乘法操作
10! = 3,628,800
The factorial of 10 is 3,628,800.
Trailing zeroes in factorial of 10 are 2 because the number of consecutive zeros at the end of the factorial.
Example
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