- floor: documentation ( source)
- date: documentation ( source)
<?php
$startYear = 2014;
$startQuarter = 4;
$endYear = date('Y');
$endQuarter = floor((date('m')-1) / 3) + 1;
for($year = $startYear; $year <= $endYear; $year++) {
for($quarter = $startQuarter; $quarter <= $endQuarter; $quarter++) {
echo '<option value="' . $year . ' / ' . $quarter . ((($interval == $year . ' / ' . $quarter) || (!$interval && $quarter == $endQuarter && $year == $endYear)) ? ' selected="selected"' : '') . '">' . $year . ' / ' . $quarter . '</option>';
}
}