Write a PHP function that accepts an array of strings as a parameter, and returns the longest string (The one with the most number of characters) in the array. Output the result, i.e. the longest string, using the echo function. You may use an in-built PHP function to determine the length, i.e. the number of characters, of each string in the array. Use the following array of strings $strings = array( 0 => "The Merry Wives of Windsor", 1 => "The Comedy of Errors"; 2 => "Much Ado About Nothing", 3 => "A Midsummer Night's Dream", 4 => "As You Like It", 5 => "All's Well That Ends Well" ); Exercise 6 Write a PHP program to reverse the characters in a string without using any built-in PHP function to help you. Instead use a while loop to count the number of characters in the string, then use a for loop to build a string with the characters of the original string in reverse order. Note: The PHP string datatype allows you to make an array-like access to the single characters in a string, even though the string is not an array. Use this string - $string = "Four score and seven years ago"; in your program Display the original and reversed string using the echo functi