display sequence of days
function weekendDaysToString($days, $lang = 'en') {
$and = array('pt'=>'e', 'en'=>'and');
$strWeek = array( // config with more langs!
'pt'=>array("Segunda", "Terça", "Quarta", "Quinta", "Sexta",
"Sábado", "Domingo"),
'en'=> array("Monday", "Tuesday", "Wednesday", "Thursday",
"Friday", "Saturday", "Sunday")
);
$days = array_unique($days);
sort($days);
$seq = preg_replace_callback( // Split sequence by ",":
'/0246|024|025|026|135|146|246|02|03|04|05|06|13|14|15|16|24|25|26|35|36|46/',
function ($m) { return join( ',' , str_split($m[0]) ); },
implode('',$days)
);
// split two or more days by "-":
$seq = preg_replace('/(\d)\d*(\d)/', '$1-$2', $seq);
$a = explode(',',$seq);
$last = array_pop($a);
$n = count($a);
// Formatting and translating:
$seq = $n? implode(", ",$a): $last;
if ($last && $n) $seq = "$seq $and[$lang] $last";
return preg_replace_callback(
'/\d/',
static function ($m) use (&$strWeek,$lang) {
return $strWeek[$lang][$m[0]];
},
$seq
);
}
############## TESTINGS #################
print "\n".weekNumbers_toStr(array(6,1,2,3,6),'en'); // corrects order and dups
print "\n".weekNumbers_toStr(array(0,1,2,3,6)); // Monday-Thursday and Sunday
print "\n".weekNumbers_toStr(array(3,4,6),'pt'); // Quinta-Sexta e Domingo
print "\n".weekNumbers_toStr(array(3,4,6)); // Thursday-Friday and Sunday
print "\n".weekNumbers_toStr(array(2,3,4,6)); // Wednesday-Friday and Sunday
print "\n".weekNumbers_toStr(array(3,5)); // Thursday and Saturday
print "\n".weekNumbers_toStr(array(0,2,4,6)); // Monday, Wednesday, Friday and Sunday
print "\n".weekNumbers_toStr(array(0)); // Monday
print "\n".weekNumbers_toStr(array());