Unidentified variable after being declared - php

Question

I'm getting this error
Fatal error: Non-static method Connect::connect() cannot be called statically in D:\xampp\htdocs\Panel\core\init.php on line 63
Here is my code
<?php
class Connect{
public $db_host = "localhost";
public $db_user = "root";
public $db_pass = "";
public $db_name = "panel";
public function connect(){
if(mysql_connect($db_host, $db_user, $db_pass)){
if(mysql_select_db($db_name)){
return true;
}else{
die(mysql_error());
}
}else{
die(mysql_error());
}
return false;
}
}
?>
How do I make the function static?
I tried adding 'static' to the function scope, but I got another error
Thanks :)

Answer 1

You have to pass the variables to function as parameter
function connect($db_host, $db_user, $db_pass,$db_name)
And call this function as
connect($db_host, $db_user, $db_pass,$db_name);
Edit
By seeing your pastebin, you are calling class variables, you have to use $this->variale_name to access them.
<?php
class Connect{
public $db_host = "localhost";
public $db_user = "root";
public $db_pass = "";
public $db_name = "panel";
public function connect(){
if(mysql_connect($this->db_host, $this->db_user, $this->db_pass)){
if(mysql_select_db($this->db_name)){
return true;
}else{
die(mysql_error());
}
}else{
die(mysql_error());
}
return false;
}
}
?>
PDO
<?php
class Connect{
private $db_host = "localhost";
private $db_user = "root";
private $db_pass = "";
private $db_name = "panel";
private $dbh = false;
public function connect(){
if ($this->dbh === false)
$this->dbh = new PDO('mysql:host='.$this->db_host.';dbname='.$this->db_name, $this->db_user, $this->db_pass);
return $this->dbh;
}
}
?>

Answer 2

You have to declare the variables inside the function like this
<?php
function connect(){
$db_host = "localhost";
$db_user = "root";
$db_pass = "";
$db_name = "panel";
if(mysql_connect($db_host, $db_user, $db_pass)){
if(mysql_select_db($db_name)){
}else{
die(mysql_error());
}
}else{
die(mysql_error());
}
}
?>
Or you can pass the parameters in the function like this
$db_host = "localhost";
$db_user = "root";
$db_pass = "";
$db_name = "panel";
connect($db_host,$db_user, $db_pass, $db_name);
function connect($db_host,$db_user, $db_pass, $db_name){
if(mysql_connect($db_host, $db_user, $db_pass)){
if(mysql_select_db($db_name)){
}else{
die(mysql_error());
}
}else{
die(mysql_error());
}
}
?>

Answer 3

$db_host = "localhost";
$db_user = "root";
$db_pass = "";
$db_name = "panel";
These variables are global and can't be accessible in function connect. If you have to use these global variables then use keyword global . Then these vars will be available within the function.
function connect(){
global $db_host, $db_user, $db_pass, $db_name ;
if(mysql_connect($db_host, $db_user, $db_pass)){
if(mysql_select_db($db_name)){
}else{
die(mysql_error());
}
}else{
die(mysql_error());
}
}