[MySQL] Fichier créé à partir d'un SELECT INTO OUTFILE

Bonjour à tous,

Je n'arrive pas a comprendre ce que je dois faire sur un hébergement mutualisé pour récupérer un export de table à l'aide d'un script.

Le script export.php doit actualiser un fichier prestashop.csv
Le fichier prestashop.csv est placé dans le répertoire www mais il reste vide.
export.php est également placé dans www .

Donc pour lancer le script export.php je fait www.machin.com/export.php
mais prestashop.csv reste désespérément vide.
le fichier prestashop.csv a des droits 777.

Je vois pas trop comment m'y prendre car sur mon local cela fonctionne parfaitement.

Merci pour l'aide.

Voici mon script:

Code:

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<?php
// Connexion master sur $connexion2
try {
$connexion = new PDO('mysql:host=xxxxxx;dbname=xxxxx', 'xxxx', 'xxxxx');
$connexion->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch(PDOException $e)
{
     echo $e->getMessage();
}
 
 
$file_name = 'prestashop.csv';
$stmt = $connexion->query("SELECT * FROM ps_orders");
$count = $stmt->rowCount();
$stmt_dsp = $stmt->fetch(PDO::FETCH_OBJ);
 
if(!empty($count)){
		  if (file_exists($file_name))
		  {
			unlink($file_name);
 
		  $export = $connexion->query("
		  SELECT 
		  'Ref commande', 
		  'ID client', 
		  'Nom', 
		  'Prenom', 
		  'Adresse', 
		  'Adresse 2', 
		  'Ville', 
		  'Code postal', 
		  'Pays', 
		  'Email',
		  'Telephone',
		  'Urgent',
		  'Remarques',
		  'Code article',
		  'Quantite',
		  'Date livraison'
		  
		  UNION ALL
		    
		  
		  SELECT 
		  ps_orders.reference, 
		  ps_address.company, 
		  ps_address.lastname, 
		  ps_address.firstname, 
		  ps_address.address1, 
		  ps_address.address2, 
		  ps_address.city, 
		  ps_address.postcode,
		  ps_country.iso_code,
		  ps_customer.email,
		  ps_address.phone,
		  '',
		  '',
		  ps_product.reference,
		  ps_cart_product.quantity,
		  ''  
		   		  
		  
 INTO OUTFILE '$file_name' 
 FIELDS TERMINATED BY ';' 
 LINES TERMINATED BY '\n' 
 FROM ps_cart_product 
 LEFT JOIN ps_product ON (ps_cart_product.id_product = ps_product.id_product) 
 LEFT JOIN ps_orders ON (ps_orders.id_cart = ps_cart_product.id_cart) 
 LEFT JOIN ps_customer ON (ps_orders.id_customer = ps_customer.id_customer) 
 LEFT JOIN ps_cart ON (ps_cart.id_cart = ps_cart_product.id_cart) 
 LEFT JOIN ps_address ON (ps_cart.id_address_delivery = ps_address.id_address) 
 LEFT JOIN ps_country ON (ps_country.id_country = ps_address.id_country) 

 GROUP BY
 		  ps_orders.reference, 
		  ps_address.company, 
		  ps_address.lastname, 
		  ps_address.firstname, 
		  ps_address.address1, 
		  ps_address.address2, 
		  ps_address.city, 
		  ps_address.postcode,
		  ps_country.iso_code,
		  ps_customer.email,
		  ps_address.phone,
		  ps_product.reference,
		  ps_cart_product.quantity
 

 ");
 
		  }
}