Erreur SQL.
SELECT COUNT(membres2.id),login,titre_page,membres2.id as id,sexe,CP,presentation,msg_perso,nbr_affichages_page,date_inscription,avatar,liens,design_color,design_img,design_align,design_repeat,blocs,bann,b_transparent,size,box_actu,box_music,box_avatar,box_contact,box_imgs,box_presentation,box_infos,box_friends,box_links,page_theme,page_color,bande_color,back_img,back_align,back_repeat,back_fixed,back_color,text_color,text_link_color,font_size,font_style,opa_page,opa_bloc FROM membres2,design2 WHERE (login="petrou") AND (id_design=design2.id) AND (valid_id="0");
In aggregated query without GROUP BY, expression #3 of SELECT list contains nonaggregated column 'winkybdd.membres2.titre_page'; this is incompatible with sql_mode=only_full_group_by