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/** | |
* | |
* @param \DateTime $date DateTime object | |
* @param int $monthToAdd Months to add at time | |
*/ | |
function addMonth(\DateTime $date, $monthToAdd) | |
{ | |
$year = $date->format('Y'); | |
$month = $date->format('n'); | |
$day = $date->format('d'); | |
$year += floor($monthToAdd / 12); | |
$monthToAdd = $monthToAdd % 12; | |
$month += $monthToAdd; | |
if ($month > 12) { | |
$year ++; | |
$month = $month % 12; | |
if ($month === 0) { | |
$month = 12; | |
} | |
} | |
if (! checkdate($month, $day, $year)) { | |
$newDate = \DateTime::createFromFormat('Y-n-j', $year . '-' . $month . '-1'); | |
$newDate->modify('last day of'); | |
} else { | |
$newDate = \DateTime::createFromFormat('Y-n-d', $year . '-' . $month . '-' . $day); | |
} | |
$newDate->setTime($date->format('H'), $date->format('i'), $date->format('s')); | |
return $newDate->format('Y-m-d'); | |
} | |
echo addMonth(new \DateTime('2015-01-30'), 1); //2015-02-28 | |
echo addMonth(new \DateTime('2015-01-30'), 2); //2015-03-30 | |
echo addMonth(new \DateTime('2015-01-30'), 3); //2015-04-30 |
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/** | |
* Export an array as downladable Excel CSV | |
* http://stackoverflow.com/questions/155097/microsoft-excel-mangles-diacritics-in-csv-files | |
* @param array $header | |
* @param array $data | |
* @param string $filename | |
*/ | |
function toCSV($header, $data, $filename) | |
{ | |
$sep = "\t"; | |
$eol = "\n"; | |
$csv = count($header) ? '"' . implode('"' . $sep . '"', $header) . '"' . $eol : ''; | |
foreach ($data as $line) { | |
$csv .= '"' . implode('"' . $sep . '"', $line) . '"' . $eol; | |
} | |
$encoded_csv = mb_convert_encoding($csv, 'UTF-16LE', 'UTF-8'); | |
header('Content-Description: File Transfer'); | |
header('Content-Type: application/vnd.ms-excel'); | |
header('Content-Disposition: attachment; filename="' . $filename . '.csv"'); | |
header('Content-Transfer-Encoding: binary'); | |
header('Expires: 0'); | |
header('Cache-Control: must-revalidate, post-check=0, pre-check=0'); | |
header('Pragma: public'); | |
header('Content-Length: ' . strlen($encoded_csv)); | |
echo chr(255) . chr(254) . $encoded_csv; | |
exit; | |
} |
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