Erreur SQL !
FROM news WHERE (titre_news REGEXP "[[:<:]]t(e|é|è|ê|ë)st[[:>:]]" OR mots_cles_news REGEXP "[[:<:]]t(e|é|è|ê|ë)st[[:>:]]" OR texte_news REGEXP "[[:<:]]t(e|é|è|ê|ë)st[[:>:]]") AND affiche_news="1" ORDER BY date_news DESC, id_news DESC
Illegal argument to a regular expression.