Codice PHP:
<?php
$mio_array = array(9,10,12,14,15,16);
function serie($array) {
$range = range( min($array) , max($array) );
$interv = array();
$i = 0;
foreach($range as $valore) {
if (in_array($valore,$array))
$interv[$i][] = $valore;
else
$i++;
}
$finale = array();
$k = 0;
foreach($interv as $elm) {
if (count($elm) < 3) {
$finale[$k][] = $elm;
next($elm);
}
else {
$finale[$k][] = min($elm);
$finale[$k][] = max($elm);
}
$k++;
}
return $finale;
}
echo '<pre>';
print_r(serie($mio_array));
?>