passing array as hidden field

I want to pass a 1 dim. array through a form, I use the hidden field and do as follows: <form method=POST ACTION=\"updateHTML.php\"> <input type=hidden name=layer[] value=\""; foreach($layer as $lay) { print "$lay "; } print "\"> This generates the foll. source: <form method=POST ACTION="updateHTML.php"> <input type=hidden name=layer[] value="a b c d e f g h "> where actually it should be $layer[] = "a", "b", "c", .... i.e. it doesn't remain an array anymore and thus I cannot do array operations (eg. array_slice etc.) on it. Can anyone tell how I can pass it to my forms as an array? Thanks -Pushkar S. Pradhan