<?php
$current_day = date('N'); // Current day of the week as a number (1-7)
$current_hour = date('H'); // Current hour in 24 hr format
if($current_day < 6) { // Check if it's Monday - Friday
if($current_hour > 6 && $current_hour < 9) { // time is between 6 and 9 AM
$image = 'morning.jpg';
}
elseif($current_hour > 15 && $current_hour < 17) { // time is between 3 and 5 pm
$image = 'afternoon.jpg';
}
elseif($current_hour > 17 && $current_hour < 21) { // time is between 5 and 9 pm
$image = 'evening.jpg';
}
else { // time is none of the above
$image = 'unkown.jpg';
}
}
else {
$image = 'unkown.jpg';
}