php pdo mysql connect - confusing syntax problem - php

Question

<?php
$mysql_host='mysql1.000webhost.com';
$mysql_dbname='a8130617_skola';
$mysql_username='something';
$mysql_password='something';
class mysql {
try{
public $db = new PDO("mysql:host=$mysql_host;dbname=$mysql_dbname",
$mysql_username, $mysql_password);
}
catch(PDOException $e){
echo $e->getMessage();
}
} //ERROR EXCLAMATION MARK HERE???
?>
why does netbeans 6.9.1 consider this to be false syntax?
many thanks

Answer 1

Do you know anything about OOP ?
Class should contain fields and/or methods. You just surrounded a piece of code with class{}. It is not programming.
Read about OOP in PHP - here is manual: http://php.net/manual/en/language.oop5.php
Read it for your own good.
Edit:
I know that following example can make you much lazy but I'll take a shoot and believe you will read more.
Example class for connections can look like:
class Mysql {
protected $_host;
protected $_dbname;
protected $_username;
protected $_password;
protected $_db;
public function __construct($host = null, $dbname = null, $username = null, $password = null)
{
$this->_host = $host;
$this->_dbname = $dbname;
$this->_username = $username;
$this->_password = $password;
}
public function connect()
{
try {
$this->_db = new PDO('mysql:host=' . $this->_host . ';dbname=' . $this->_dbname, $this->_username, $this->_password);
}
catch(PDOException $e){
echo $e->getMessage();
}
}
public function getDb()
{
return $this->db;
}
public function setHost($host)
{
$this->_host = $host;
return $this;
}
public function getHost()
{
return $this->_host;
}
public function setDbname($dbname)
{
$this->_dbname = $dbname;
return $this;
}
public function getDbname()
{
return $this->_dbname;
}
public function setUsername($username)
{
$this->_username = $username;
return $this;
}
public function getUsername()
{
return $this->_username;
}
public function setPassword($password)
{
$this->_password = $password;
return $this;
}
public function getPassword()
{
return $this->_password;
}
}
And example usage:
$mysql = new Mysql('mysql1.000webhost.com', 'a8130617_skola', 'something', 'something');
$mysql->connect();

Answer 2

try{
public $db = new PDO("mysql:host=$mysql_host;dbname=$mysql_dbname",
$mysql_username, $mysql_password);
}
catch(PDOException $e){
echo $e->getMessage();
}
Try catch blocks need to be inside a method. But going with that, not sure why you are wrapping this in a class? Your class is a wrapper for an already defined class.