mysql_fetch_lengths() stores the lengths of each result column in the last row returned by mysql_fetch_row(), mysql_fetch_array(), and mysql_fetch_object() in an array, starting at offset 0.
mysql_fetch_lengths() stocke les tailles de chaque colonne de la dernière ligne retournée par mysql_fetch_row(), mysql_fetch_array() et mysql_fetch_object() dans un tableau, en commençant à la position.