Write the PHP code needed to accomplish the requested task (you will need to utilize at least one of the PHP string functions in every question):
- Assume we have just read a string value from a web page form and stored that value into the string variable $username. Write the PHP code needed to check if the username that was entered is equal to "ADMIN" (upper or lower case, or combination of the two). If the admin username was entered display the string "Admin access is not allowed from your IP Address". For any other username display the string "Enter your password".
2.Assume we have an array named $passwords that contains passwords (strings) for our system. Passwords that are shorter than 6 characters are to be revoked. Write the PHP code that scans the $passwords array and displays all passwords that are less than 6 characters long.
3.Assume we have just read a string value from a web page form and stored that value into the string variable named $friends. The string stores a list of friends, each separated by a comma. We want to convert the string to an array named $friendArray - that is we want each name to be placed in one entry of the array. Write the PHP code that places the $friends names into the array $friendArray. Then write the code needed to scan the array for the name "Santa Claus" or "Easter Bunny". If any of these names appear display the message "Very Funny - Do you also know Mickey Mouse?"
4.Assume we have an array named $students. Each entry in the array contains a student's full name (e.g. "Jane Smith"). Write the PHP code needed to display all students (in the array) whose first name starts with the letter "J".
5.As in Question 4 assume we have an array named $students. Each entry in the array contains a student's full name (e.g. "Jane Smith"). Write the PHP code needed to display all students (in the array) whose LAST name begins with the letter "S". Hint: Find the location of the space character within the full name. The first letter of the last name is located in the next position.