array varible problems

Dear you, Now, I want to define a set of array varible with table structure as the following: Result page: <table> <tr> <td><? $f1[0];?></td> <td><? $f2[0];?></td> <td><? $f3[0];?></td> <td><? $f4[0];?></td> </tr> <tr> <td><? $f1[1];?></td> <td><? $f2[1];?></td> <td><? $f3[1];?></td> <td><? $f4[1];?></td> </tr> <tr> <td><? $f1[2];?></td> <td><? $f2[2];?></td> <td><? $f3[2];?></td> <td><? $f4[2];?></td> </tr> </table> Source page: <table> <tr> for($i=1;$i<5;$i++) { <td><input type=checkbox name='f<? echo $i;?>[]' value='1'></td> } </tr> </table> Only display the result of zero array, eg : f1[0] f2[0] f3[0] f4[0] So, how to write the source (Web page - when user click the submit button) by using loop ?