(Solved) : Hello Need Help Php Functions Using Local Variables Function Computefactorial Parameter S Q28358087 . . . .

hello , I need help in these php functions , using localvariables.

A. Function: computefactorial ,Parameter(s): Number .

Given the number, find its factorial and return it. If theparameter is not an integer number or if it is a negative number,return false.
B. Function: findMostFrequent ,Parameter(s): String Array

Outputs the string (element) that appears the most frequentlywithin the array with its frequency of repetition. Strings shouldbe case insensitive.
C. Function: toUppercaseFirst, Parameter(s): String

For each word in the string, capitalize (uppercase) the firstletter, and make sure the rest of the letters of all words arelower case, then return the modified string.
D. Function: splitCapitalizeSort, Parameter(s): String

Given the