how to use another file inside a php class - php

Question

I've got two files dbconnect.php and config.php
dbconnect.php
<?php
class connect{
public function __construct(){
$config = require_once __DIR__ . 'config.php';
}
private $dbhost = $config['host'];
private $dbuser = $config['username'];
private $dbpass = $config['pass'];
private $dbname = $config['dbname'];
public function startConn(){
$this->DBcon = null;
try{
$this->DBcon = new PDO("mysql:host=".$this->dbhost.";dbname=".$this->dbname, $this->dbuser, $this->dbpass);
}catch(Exception $e){
echo "error connecting:";
}
return $this->DBcon;
}
}
?>
config.php
<?php
/**
* Contains all configurations
*
*/
return [
'dbname' => 'user',
'pass' => '#user.intern1',
'username' => 'user1',
'host' => 'localhost',
];
?>
in my dbconnect.php file;
how do I include variables from my config.php into the class connect
If I do it the following way above;
it yells at me and gives me Fatal error:
"Parse error: syntax error, unexpected '$config' (T_VARIABLE) in C:\xampp\htdocs\hngfun\profile\adeojoemmanuel\php-handler\dbconfig.php on line 8"

Answer 1

I'm taking a guess here. But I can clearly see that you are setting $config as a local variable in the constructor. That means it is not available once you leave the constructor.
<?php
class connect{
public function __construct(){
$config = require_once __DIR__ . 'config.php';
$this->dbhost = $config['host'];
$this->dbuser = $config['username'];
$this->dbpass = $config['pass'];
$this->dbname = $config['dbname'];
}
private $dbhost ;
private $dbuser ;
private $dbpass ;
private $dbname ;
public function startConn(){
$this->DBcon = null;
try{
$this->DBcon = new PDO("mysql:host=".$this->dbhost.";dbname=".$this->dbname, $this->dbuser, $this->dbpass);
}catch(Exception $e){
echo "error connecting:";
}
return $this->DBcon;
}
}

Answer 2

Declared properties like private $dbhost cannot be assigned values that are dependent on runtime data, such as $config['host'];
Quoting from the PHP Docs:
This declaration may include an initialization, but this initialization must be a constant value--that is, it must be able to be evaluated at compile time and must not depend on run-time information in order to be evaluated.
The solution, assign the values in your constructor:
class connect{
public function __construct(){
$config = require_once __DIR__ . 'config.php';
private $this->dbhost = $config['host'];
private $this->dbuser = $config['username'];
private $this->dbpass = $config['pass'];
private $this->dbname = $config['dbname'];
}
private $dbhost;
private $dbuser;
private $dbpass;
private $dbname;
public function startConn(){
$this->DBcon = null;
try{
$this->DBcon = new PDO("mysql:host=".$this->dbhost.";dbname=".$this->dbname, $this->dbuser, $this->dbpass);
}catch(Exception $e){
echo "error connecting:";
}
return $this->DBcon;
}
}

Answer 3

You need to set inside constructor:
private $dbhost;
private $dbuser;
private $dbpass;
private $dbname;
public function __construct(){
$config = require_once __DIR__ . 'config.php';
$this->dbhost = $config['host'];
$this->dbuser = $config['username'];
$this->dbpass = $config['pass'];
$this->dbname = $config['dbname'];
}

Answer 4

The first problem is that you can't just return anything from your config.php file. You can only return a result inside a function. One way to implement this is to declare the array as a global variable and then use it inside all other php files that would need that configuration array.
<?php
/**
* Contains all configurations
*
*/
$dbconfig = array(
'dbname' => 'user',
'pass' => '#user.intern1',
'username' => 'user1',
'host' => 'localhost',
);
?>
<?php
require_once __DIR__ . 'config.php';
class connect{
public function __construct(){
}
private $dbhost = $dbconfig['host'];
private $dbuser = $dbconfig['username'];
private $dbpass = $dbconfig['pass'];
private $dbname = $dbconfig['dbname'];
public function startConn(){
$this->DBcon = null;
try{
$this->DBcon = new PDO("mysql:host=".$this->dbhost.";dbname=".$this->dbname, $this->dbuser, $this->dbpass);
}catch(Exception $e){
echo "error connecting:";
}
return $this->DBcon;
}
}
?>