Show next array value at a certain time - php

Question

I want to show one value from my array until a certain time is reached (every morning at 5:00 am). If this time is reached the next value from my array should be shown.
After the last value of the array was reached the script should start (automatically) with the first array value, again.
Example:
My array
$eventschedule = array("apple", "banana", "mango", "peach");
Loop should work like that:
**Schedule** | **Shown array value**
27.12. 5:00 am - 28.12. 4:59 am | apple
28.12. 5:00 am - 29.12. 4:59 am | banana
29.12. 5:00 am - 30.12. 4:59 am | mango
30.12. 5:00 am - 31.12. 4:59 am | peach
31.12. 5:00 am - 01.01. 4:59 am | apple | **loop should start again**
I think this could be achieved within a loop (maybe there is a better solution), but I don't know how to express the condition, that the script should get the next arrays' value every day at 5:00 am.
$eventschedule = array("apple", "banana", "mango", "peach");
$currenttime = date('Y-m-d H:i:s');
$nextevent = date('Y-m-d 5:00', strtotime(' +1 day'));
$i = 0;
while ($i <= 3) {
if ($currenttime < $nextevent) {
echo $eventschedule[$i];
$i++;
}
}

Answer 1

I'll deal mostly with the logic side of things, but I'd like to add that maybe your problem could be solved in other ways, or at least improve in some ways. For example: There's no sleep in your code? If the time did not arrive yet, it should check for the next one?
There's 2 solutions that I see, although they have the same basis: loop the array indefinitely. But, there are some little changes in implementation details:
Nested Loops: Use while (true) and a second loop internally (a while like you use, or a for/foreach).
Flattened Loop with modulo: Use while (true) { $i = ($i + 1) % count($eventschedule); } with your logic after the $i.
I'll show only the loop part of the code, assume that $eventschedule, $currenttime and $nextevent are already defined.
Nested Loops
I'll use nested while just because that's what you used, but otherwise I'd recommend using foreach.
while (true) {
$i = 0;
while ($i <= 3) { // could be generalized to $i <= count($eventschedule)
// or even better: changed to foreach
if ($currenttime < $nextevent) {
echo $eventschedule[$i];
$i++;
}
}
}
Flattened Loop with modulo
The idea is that when $i = 4, it'll loop back to 0.
$i = 0;
while (true) {
if ($currenttime < $nextevent) {
echo $eventschedule[$i];
$i = ($i + 1) % 4; // or % count($eventschedule);
// this is equivalent to:
/*
$i++;
if ($i == 4) {
$i = 0;
}
*/
}
}