/**
* converts the format string from POSIX notation to PHP notation
*
* example: converts '%Y-%m-%d' to 'Y-M-d'
* note: the blank-padded sequences are converted to non-blank-padded ones
*
* @param string $format format string in POSIX % notation
* @param array $filter only include these elements for the date string
*
* @return string format string in PHP notation
*
* @static
*/
static function posixToPhp($format, $filter = null)
{
$replacements = CRM_Core_SelectValues::qfDatePartsMapping();
if ($filter) {
$filteredReplacements = $replacements;
foreach ($replacements as $key => $value) {
if (in_array($value, $filter)) {
$filteredReplacements[$key] = $value;
} else {
$filteredReplacements[$key] = null;
}
}
return strtr($format, $filteredReplacements);
} else {
return strtr($format, $replacements);
}
}