public function numeroMatricula($num)
{
$p = new Periodo();
$numb = $p->sel_numePeriodo_Matricula();
$contMatricula;
if ($num < 10) {
$contMatricula = "2150000" . $num;
} else {
if ($num < 100) {
$contMatricula = "215000" . $num;
} else {
if ($num < 1000) {
$contMatricula = "21500" . $num;
} else {
if ($num < 10000) {
$contMatricula = "2150" . $num;
} else {
$contMatricula = $numb . $num;
}
}
}
}
return $contMatricula;
}