What do you do while Doing Do-While Loops? A regular while loop will skip over the loop body if the expression that’s evaluated is never true. But what if we need the contents of the body to be executed at least once? That’s what the  do-while loop does for us. <?php $will_execute = false; while ( $will_execute ) { echo “I will execute at least once”; } ?> Looking at the code above, the while loop will never execute since the expression is always false. PHP will just skip over it. In this example, we want the statement to execute at least once. We want PHP to