how i can get array value from txtbox inside while loop in php?

[israellaky]

Hello everyone im creating a simple grading post.
My problem is how to get the array from multiple input type=text to update a tbl from mysql

here is my code:

PHP Code: [Select]

while($row=mysql_fetch_assoc($sql)){
$id=$row['id'];
$name=$row['studname'];
$cor=$row['course'];
$yl=$row['YearLevel'];

 
 
 

echo"<tr bgcolor='#E6E6E6'>

<td align='left'><p align='left'>".$b.".".$name."</p><input type='text' name='cont[$a]' value=".$id."></td>

<td><p align='left'>".$cor."</p></td>

<td> <input type='text' name='pre[]' value=''style='width:40px;'></td>

<td> <input type='text' name='mid[]' value=''style='width:40px;' ></td>

<td> <input type='text' name='semi[]' value=''style='width:40px;' ></td>

<td> <input type='text' name='fin[]' value=''style='width:40px;' ></td>

</tr>";

$a++;

$b++;

$pre[]=$_POST['pre'];

}

  echo  "

<tr> <td>

<input type='submit' name='update[$a]' value='Update'/>

 </td></tr>";


if user click the submit button   
 it well update the tble with same id

PHP Code: [Select]

if (isset($_POST['update'])){

 

 

  

foreach($_POST['pre'] as $key =>$val){

echo  $val.'-'.$key.' <br/>';

 

}

 

 

 

 

 

}
How do I build a script and/or function that would get the value from input field in php?
sorry for my bad language im a beginner