Я создал эту функцию, которая делает это, и комментарии покажут вам, как это было сделано.
function list_days($start, $end) {
//convert day "word" to it's given number
//Monday = 1, Tuesday = 2 ... Sunday = 7
$start_n = date('N', strtotime($start));
$end_n = $end_range = date('N', strtotime($end));
//we also set $end_range above, by default it's set to the $end day number,
//but if $start and $end are the same it will be changed later.
//create an empty output array
$output = [];
//determine end_range for the for loop
//if $start and $end are not the same, the $end_range is simply the number of $end (set earlier)
if($start_n == $end_n) {
//if $start and $end ARE the same, we know there is always 7 days between the days
//So we just add 7 to the start day number.
$end_range = $start_n + 7;
}
//loop through, generate a list of days
for ($x = $start_n; $x <= $end_range; $x++) {
//convert day number back to the readable text, and put it in the output array
$output[] = date('l', strtotime("Sunday +{$x} days"));
}
//return a string with commas separating the words.
return implode(', ', $output);
}
Использование:
Пример 1:
echo list_days('Monday', 'Wednesday');
//output: Monday, Tuesday, Wednesday
Пример 2:
echo list_days('Monday', 'Monday');
//output: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday, Monday