Trying to show different banner images based on server time using PHP - php

Question

I have four greeting images which I intend to show based on what time user enters the site.
$morning = "img/morning.png";
$afternoon = "img/afternoon.png";
$evening = "img/evening.png";
$night = "img/night.png";
And I have some conditional statements to assign the values to $cover variable. When I tested, the conditional statement doesn't work.
date_default_timezone_set('Asia/Yangon');
$Hour = date('G');
if($Hour >= 5 && $Hour <= 11) {
$cover = $morning;
}elseif ($Hour >= 11 && $Hour <= 4) {
$cover = $afternoon;
}elseif ($Hour >= 4 && $Hour <= 9){
$cover = $evening;
}elseif ($Hour >= 9 && $Hour <= 4) {
$cover = $night;
}
Img tag
<img class="card-img-top" src="<?php echo $cover; ?>" alt="Not Available" >

Answer 1

if($Hour >= 0 && $Hour <= 11) {
$cover = $morning;
}
elseif ($Hour > 11 && $Hour <= 16) {
$cover = $afternoon;
}
elseif ($Hour > 16 && $Hour <= 19){
$cover = $evening;
}
else{
$cover = $night;
}
Above code will check your hours from 00:00 until 24:00 next day. I fixed your if-else statements so they make more sense in a way that there is a flow in the times.
G 24-hour format of an hour without leading zeros 0 through 23

Answer 2

$hour = date('H', time());
if( $hour > 6 && $hour <= 11) {
$cover = $morning;
}
else if($hour > 11 && $hour <= 16) {
$cover = $afternoon;
}
else if($hour > 16 && $hour <= 23) {
$cover = $evening;
}
else {
$cover = $night;
}
Construct an instance of date and acquire the hour from it