[snip]
The user have to choose 2 date ($date_begin & $date_last) and i want
to know howcan i make to find field in mysql where field included
between ($date_begin & $date_last)

"SELECT * FROM `news` WHERE `date` included in ($date_begin &
$date_last)"
[/snip]

This is better suited to the mysql list, but you could do ...
"SELECT * FROM `news` WHERE `date` BETWEEN $date_begin AND
$date_last "

HTH!