警告：require_once(../initialize.php)：无法打开 stream 和致命错误：require_once()：无法打开所需的问题

Question

I am running my system to 000webhost and this issue pops out when I open it

Warning: require_once(../initialize.php): failed to open stream: No such file or directory in /storage/ssd4/040/17993040/public_html/EPS/classes/DBConnection.php on line 3

Fatal error: require_once(): Failed opening required '../initialize.php' (include_path='.:/usr/share/pear:/usr/share/php') in /storage/ssd4/040/17993040/public_html/EPS/classes/DBConnection.php on line 3

and this are the code files

DBConnection.php

<?php
if(!defined('id17993040_epsdb')){
    require_once("../initialize.php");
}
class DBConnection{

    private $host = "local_host";
    private $username = "id17993040_root";
    private $password = "********";
    private $database = "id17993040_epsdb";
    
    public $conn;
    
    public function __construct(){

        if (!isset($this->conn)) {
            
            $this->conn = new mysqli($this->host, $this->username, $this->password, $this->database);
            
            if (!$this->conn) {
                echo 'Cannot connect to database server';
                exit;
            }            
        }    
        
    }
    public function __destruct(){
        $this->conn->close();
    }
}
?>

initialize.php

    <?php
$dev_data = array('id'=>'-1','firstname'=>'Developer','lastname'=>'','username'=>'dev_oretnom','password'=>'**********','last_login'=>'','date_updated'=>'','date_added'=>'');
if(!defined('base_url')) define('base_url','https://web-silverconcha.000webhostapp.com/EPS/');
if(!defined('base_app')) define('base_app', str_replace('\\','/',__DIR__).'/' );
if(!defined('dev_data')) define('dev_data',$dev_data);
if(!defined('DB_SERVER')) define('DB_SERVER',"localhost");
if(!defined('DB_USERNAME')) define('DB_USERNAME',"id17993040_root");
if(!defined('DB_PASSWORD')) define('DB_PASSWORD',"************");
if(!defined('DB_NAME')) define('DB_NAME',"id17993040_epsdb");
?>

What are the solutions to this? Sorry for asking just a newbie

UPDATE: This was the filesystem filedir

filedir2

filedir3

Answer 1

PHP throws a fatal error when you are using require_once() and it doesn't find the file, which causes script to stop, unlike include_once() which will only show you a warning that it could not find the file.

So it's simply telling you " I can't find the file that you asked for in line 3"

You can try

$realPath = realpath($_SERVER["DOCUMENT_ROOT"]);

require_once("$realPath/initialize.php");

Highly recommend to read and learn more about these:

realpath