get_attributes() problem when get_attribute() works fine

When I execute this code to get attributes one by one:

$product = new WC_Product( $produit_id );
$tous_produits[$produit_id]['Lien_Photo'] = $product->get_attribute( 'Lien_Photo' );
$tous_produits[$produit_id]['Lien_Specsheet'] = $product->get_attribute( 'Lien_Specsheet' );
$tous_produits[$produit_id]['Photometrie'] = $product->get_attribute( 'Photometrie' );
$tous_produits[$produit_id]['ID_Famille'] = $product->get_attribute( 'ID_Famille' );
$tous_produits[$produit_id]['ID_Sous_Famille'] = $product->get_attribute( 'ID_Sous_Famille' );
$tous_produits[$produit_id]['ID_Manufacturier'] = $product->get_attribute( 'ID_Manufacturier' );
$tous_produits[$produit_id]['ID_Marque'] = $product->get_attribute( 'ID_Marque' );
$tous_produits[$produit_id]['ID_Serie'] = $product->get_attribute( 'ID_Serie' );
$tous_produits[$produit_id]['ID_Voltage'] = $product->get_attribute( 'ID_Voltage' );
$tous_produits[$produit_id]['ID_Source'] = $product->get_attribute( 'ID_Source' );
$tous_produits[$produit_id]['ID_Type_de_source'] = $product->get_attribute( 'ID_Type_de_source' );
$tous_produits[$produit_id]['ID_Installation'] = $product->get_attribute( 'ID_Installation' );
$tous_produits[$produit_id]['guide_stock'] = $product->get_attribute( 'ID_GD' );
$tous_produits[$produit_id]['Prix_Budget'] = $product->get_attribute( 'Prix_Budget' );
$tous_produits[$produit_id]['Lumen_emis'] = $product->get_attribute( 'Lumen_emis' );
$tous_produits[$produit_id]['Wattage'] = $product->get_attribute( 'Wattage' );
$tous_produits[$produit_id]['id_es'] = $product->get_attribute( 'ID_ES' );
$tous_produits[$produit_id]['id_dlc'] = $product->get_attribute( 'ID_DLC' );
$tous_produits[$produit_id]['id_dlcp'] = $product->get_attribute( 'ID_DLCP' );

It works:

Array ( [1078] => Array ( [title] => H1499T-1495P [description] => LUMINAIRE ENCASTRÉ TYPE GIMBAL MR16 DE COULEUR BLANC [Lien_Photo] => HALO_1495.jpg [Lien_Specsheet] => HALO 1495.pdf [Photometrie] => Non Disponible [ID_Famille] => Luminaires Downlight [ID_Sous_Famille] => Orientable [ID_Manufacturier] => Eaton [ID_Marque] => Halo [ID_Serie] => HALO 1495 [ID_Voltage] => 120V [ID_Source] => INC [ID_Type_de_source] => MR16 [ID_Installation] => Encastré Rond 4'' [guide_stock] => O [Prix_Budget] => $65 [Lumen_emis] => ? [Wattage] => ? [id_es] => N [id_dlc] => N [id_dlcp] => N ) )

When I try this code to get all the attributes in one call:

$product->get_attributes();

It doesn’t work, all values are empty:

Array ( [pa_id_gs] => Array ( [name] => pa_id_gs [value] => [position] => 0 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_gd] => Array ( [name] => pa_id_gd [value] => [position] => 1 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_t20] => Array ( [name] => pa_id_t20 [value] => [position] => 2 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_es] => Array ( [name] => pa_id_es [value] => [position] => 3 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_dlc] => Array ( [name] => pa_id_dlc [value] => [position] => 4 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_dlcp] => Array ( [name] => pa_id_dlcp [value] => [position] => 5 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_numero_de_catalogue] => Array ( [name] => pa_numero_de_catalogue [value] => [position] => 6 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_voltage] => Array ( [name] => pa_id_voltage [value] => [position] => 7 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_manufacturier] => Array ( [name] => pa_id_manufacturier [value] => [position] => 8 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_marque] => Array ( [name] => pa_id_marque [value] => [position] => 9 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_serie] => Array ( [name] => pa_id_serie [value] => [position] => 10 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_famille] => Array ( [name] => pa_id_famille [value] => [position] => 11 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_sous_famille] => Array ( [name] => pa_id_sous_famille [value] => [position] => 12 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_installation] => Array ( [name] => pa_id_installation [value] => [position] => 13 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_source] => Array ( [name] => pa_id_source [value] => [position] => 14 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_type_de_source] => Array ( [name] => pa_id_type_de_source [value] => [position] => 15 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_lumen_emis] => Array ( [name] => pa_lumen_emis [value] => [position] => 16 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_wattage] => Array ( [name] => pa_wattage [value] => [position] => 17 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_description] => Array ( [name] => pa_description [value] => [position] => 18 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_prix_budget] => Array ( [name] => pa_prix_budget [value] => [position] => 19 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_lien_photo] => Array ( [name] => pa_lien_photo [value] => [position] => 20 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_lien_specsheet] => Array ( [name] => pa_lien_specsheet [value] => [position] => 21 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_photometrie] => Array ( [name] => pa_photometrie [value] => [position] => 22 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_produit] => Array ( [name] => pa_id_produit [value] => [position] => 23 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) [pa_id_actif] => Array ( [name] => pa_id_actif [value] => [position] => 24 [is_visible] => 1 [is_variation] => 1 [is_taxonomy] => 1 [is_create_taxonomy_terms] => 1 ) )

I also tried this:

$attr = get_post_meta( $produit_id, '_product_attributes' );

Same thing: all values are empty.

And I’m sure I have values in it because when I call the values one by one, it works.

This one works too:
get_the_terms( $produit_id, 'pa_id_famille')

But I would really like to get all the attributes with one call, because it will help a lot for the loading time.

This one only returns the attributes, not the values of it:
wc_get_attribute_taxonomies()

I need help! I don’t understand why I can retrieve all the datas with get_attributes() when get_attribute() works just fine. Thanks!

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