PHP Program to find Factorial of a Number
What is Factorial of a Number?
The factorial of a number n can be defined as the product of all positive numbers less than or equal to n. For example, the factorial of 6 is 1 × 2 × 3 × 4 × 5 × 6 = 720.
The following table provides few examples of factorial of a number.
|2!||1 × 2||2|
|3!||1 × 2 × 3||6|
|4!||1 × 2 × 3 × 4||24|
Note: In Mathematics, factorial of a number is represented by exclamation mark.
Tips: It is recommended to use our online Factorial of a Number calculator for better understanding.
Find a Factorial of a Number
In the following example, we will find a factorial of a number 6.
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