PHP error printing inside class - php

Question

I'm trying to play with a class and not understand how it works. Some people explained how to pass variables between a function. My problem at the moment is errors. And how to extract errors from the class and print to the screen. My output is username only. How to get errors?
class form
{
protected $username;
protected $password;
protected $errors = array();
function __construct($username, $password){
$this->username = $username;
$this->password = $password;
}
public function get_errors()
{
return $this->errors;
}
public function getPassword(){
return $this->password;
}
public function getUserName() {
return $this->username;
return $this->errors = "No MySQL connection.";
}
}
$test = new form('name1', 'passw2');
echo $test->getUserName();

Answer 1

You can not return two time inside a function. But you can achieve what you want like below:-
public function getUserName() {
$this->errors = "No MySQL connection.";
return $this->username.'<br/>'.$this->errors;
}
Note:- this is the solution but your code have no mean. You have to do some useful stuff

Answer 2

try throw exception
public function getUserName() {
if($this->errors) {
throw new Exception($this->errors);
}
return $this->username;
}
$test = new form('name1', 'passw2');
try {
echo $test->getUserName();
} catch(Exception $error) {
echo 'Error:'.$error->getMessage();
}
If you get error you can simple catching this error and output to web,console or error log;

Answer 3

class form
{
protected $username;
protected $password;
protected $errors = array();
function __construct($username, $password){
$this->username = $username;
$this->password = $password;
}
public function getErrors()
{
return $this->errors;
}
public function getPassword()
{
return $this->password;
}
public function getUserName()
{
/* Add some an error to an error's array */
$this->errors[] = "No MySQL connection.";
return $this->username;
}
}
$test = new form('name1', 'passw2');
echo $test->getUserName();
var_dump($test->getErrors()); /* Get errors from a class */