5. Write a function named winStat that accepts a parameter called condition and outputs the string Window is open if condition is TRUE and Window is closed otherwise; 6. Modify the following PHP function to ensure that only the first echo statement is executed. Make your edit is as compact as possible, using the blank underline as your guide. function testrtn() { echo "This statement will be executed"; _____ ; echo "This statement should not be executed"; } 7. Edit the following PHP class definition to add a public attribute named mattr1. class MClass { ______ ___________; }