如何使用一个表单将数据发送到mysql数据库中的不同表

Im creating a college management system . So depending on the department and level registered by the student to should go to the required table . I have 9 tables; 3 business administration table for three levels i.e 100level ,200level, 300level

3 Pharmacy table for three levels i.e 100level ,200level, 300level

3 Computer science table for three levels i.e 100level ,200level, 300level

You should try something before posting question. You could probably try this logic:

If pharmacy is selected and particular level is selected then in your PHP script,

<?php
if(isset($_POST['pharmacy']) && $_POST['level']=='100'){
    $data = // Place your data here...
    $table_name = 'pharmacy_100';
}
else if(isset($_POST['pharmacy']) && $_POST['level']=='200'){
    $data = // Place your data here...
    $table_name = 'pharmacy_200';
}
else if(isset($_POST['pharmacy']) && $_POST['level']=='300'){
    $data = // Place your data here...
    $table_name = 'pharmacy_300';
}
// Same for all 3 branches...
?>

Now, you will have $data variable ready to store in database. By means of SQL connection you can add it in database.