getWeekDays.php

<?php

function getWeekDays() {
    $time = strtotime( 'monday this week' );
    $days = [];
    for($i = 0; $i<7; $i++){
        $d = new DateTime();
        $d->setTimestamp(strtotime("+$i day",$time));
        $days[] = $d->format("Y-m-d");
    }
    return $days;
}