PHP Class manusia

<?php

class manusia{
//ini properti/atribut
private $nama;
private $umur;
private $alamat;
Private $Jenis_kelamin;
private $Profesi;
//ini metode

function construct($nama,$alamat,$umur,$jenis_kelamin,$profesi){
$this->nama=$nama;
$this->alamat=$alamat;
$this->umur=$umur;
$this->jenis_kelamin=$jenis_kelamin;
$this->profesi=$profesi;
}

public function getNama(){
return $this->nama;
}
public function setnama($nama){
return "Namaku : ". $this->nama=$nama;
}
public function getalamat(){
return $this->alamat;
}
public function setalamat($alamat){
return "alamat : ".$this->alamat=$alamat;
}
public function getumur(){
return $this->umur;
}
public function setumur($umur){
return "Umur : ".$this->umur=$umur;
}
public function getJenis_kelamin(){
return $this->Jenis_kelamin;
}
public function setJenis_kelamin($Jenis_kelamin){
return "Jenis_kelamin : ".$this->Jenis_kelamin=$Jenis_kelamin;
}
public function getProfesi(){
return $this->Profesi;
}
public function setProfesi($Profesi){
return "Profesi : ".$this->Profesi=$Profesi;
}
}
//membuat objek
$retno=new manusia();
echo $Retno->setnama("Retno")."<br/>";
echo $Retno->setalamat("Kepanjen")."<br/>";
echo $Retno->setumur("19 th")."<br/>";
echo $Retno->setJenis_kelamin("Perempuan")."<br/>";
echo $Retno->setProfesi("Mahasiswa")."<br/>";


?>