PHP : chdir('../') not working from command line

Question

I'm developing a PHP cron script to check if a server is up or not (Ping).

Here is my code :

// Remonte d'un dossier
chdir('../');

// Inclusion du header pour avoir les infos de connexion à la db, fonctions, etc ...
require_once('./includes/header.php');

// Requête pour récupérer toutes les IP à pinger (Non-exclues donc)
$sReqGetAllServers = "  SELECT
                            *
                        FROM
                            host
                        WHERE
                            exclude_machine = :exclude_machine";

// Préparation de la requête
$oDatabase->Prepare($sReqGetAllServers);

// On bind la valeur au paramètre dans le WHERE
$oDatabase->BindValue(':exclude_machine', 'n', PDO::PARAM_STR);

// Exécution de la requête
$oDatabase->Execute();

// On associe les données dans un tableau à deux dimensions associatif
$aServers = $oDatabase->Assoc();

So at the first line, I need to make a chdir('../'); to include the necessary files ( header.php ).

I tested the script with Chrome and all worked fine but when I execute the script with command-line, PHP drop this error :

[14:40] root@dev.company.local / >> php -f /web/dev/company/public_html/dasPing/cron/cron.php 
PHP Warning:  require_once(./includes/header.php): failed to open stream: No such file or directory in /var/www/html/dev/diadeis/public_html/dasPing/cron/cron.php on line 7

Warning: require_once(./includes/header.php): failed to open stream: No such file or directory in /var/www/html/dev/diadeis/public_html/dasPing/cron/cron.php on line 7
PHP Fatal error:  require_once(): Failed opening required './includes/header.php' (include_path='/usr/share/php') in /var/www/html/dev/diadeis/public_html/dasPing/cron/cron.php on line 7

Fatal error: require_once(): Failed opening required './includes/header.php' (include_path='/usr/share/php') in /var/www/html/dev/diadeis/public_html/dasPing/cron/cron.php on line 7

I searched why PHP drop this but I can't find any answer.

Do anyone knows why this is happening ?

Thank you !!

Answer 1

The current working directory would be where you are executing the script from, not where the script lives. You can get the directory that contains the script using the constant __DIR__

chdir(__DIR__ . '/../');