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<?php function unichr($u) { return mb_convert_encoding('&#' . intval($u) . ';', 'UTF-8', 'HTML-ENTITIES'); } echo unichr(769); echo mb_convert_encoding('13-78995-UPR8521_PELLEGRINI_IDENTITE_carte_d_identite&769;_Pellegrini_Ch.pdf', 'UTF-8', 'HTML-ENTITIES');
Output for 7.3.0rc3
́13-78995-UPR8521_PELLEGRINI_IDENTITE_carte_d_identite&769;_Pellegrini_Ch.pdf