hello! im trying to study how checkbox work, this is i want to do
i array a list of items (item name, price, etc) from my database i would like to put a checkbox beside each item, all the items that are checked will be posted on a next form

can you please show me a brief example of it thanks!

Try this script:
Imagine that your table has the following fields:
item_name, price, and item_id for the ID for each items.

<?php

    error_reporting(0);
    session_start();
//your db connection here.

// First, query all the items in your table.
$query = mysql_query("SELECT * from table_name");
echo "<table>";
echo "<tr>";
echo "<td>"."ITEM NAME"."</td>";
echo "<td>"."ITEM PRICE"."</td>";
echo "<form action='submit_item.php' method='post'>";
echo "<td>"."<input type='submit' name='submit' value='Add Item'>"."</td>";
while($result = mysql_fetch_array($query))
{
  echo "<tr>";
  echo "<td>".$result['item_name']."</td>";
  echo "<td>".$result['price']."</td>";
  echo "<td>"."<input type='checkbox' name='$result[item_id]' value='$result[item_id' id='$result[item_id'>"."</td>";
}
echo "</form>";
echo "</table>";

Above code display all items in the table_name together with checkbox.
Now here's the code for submit_item.php where you can submit all checked items.

<?php
  error_reporting(0);
  session_start();
//your db connection here.

$query=mysql_query("select * from table_name");
while($result=mysql_fetch_array($query))
{
  $item=$result['item_id'];
  if(isset($_POST[$item])!=NULL)
  {
    $query1 = mysql_query("SELECT * FROM table_name where item_id='".$item."'");
    echo "<table>";
    echo "<tr>";
    echo "<td>"."ITEM NAME"."</td>";
    echo "<td>"."ITEM PRICE"."</td>";
    while($result = mysql_fetch_array($query))
    {
      echo "<tr>";
      echo "<td>".$result['item_name']."</td>";
      echo "<td>".$result['price']."</td>";
     }

        echo "</table>";
    						
  }				
			
}

?>

I got some error. Just change $query to $query1 on below query:

if(isset($_POST[$item])!=NULL)
  {
    $query1 = mysql_query("SELECT * FROM table_name where item_id='".$item."'");
    echo "<table>";
    echo "<tr>";
    echo "<td>"."ITEM NAME"."</td>";
    echo "<td>"."ITEM PRICE"."</td>";
    while($result = mysql_fetch_array($query)) //change $query into $query1
    {
      echo "<tr>";
      echo "<td>".$result['item_name']."</td>";
      echo "<td>".$result['price']."</td>";
     }
 
        echo "</table>";
 
  }

thanks a lot for the help! one more question why is ITEM NAME and ITEM PRICE keeps on repeating before an item
i try moving them above but it looks like that the item listed below don't belong on the table

thanks again

Try this.

$query=mysql_query("select * from table_name");
echo "<table>";
echo "<tr>";
echo "<td>"."ITEM NAME"."</td>";
echo "<td>"."ITEM PRICE"."</td>";
while($result=mysql_fetch_array($query))
{
  $item=$result['item_id'];
  if(isset($_POST[$item])!=NULL)
  {
    $query1 = mysql_query("SELECT * FROM table_name where item_id='".$item."'");
   
    while($result1 = mysql_fetch_array($query1))
    {
      echo "<tr>";
      echo "<td>".$result1['item_name']."</td>";
      echo "<td>".$result1['price']."</td>";
     }
 
        echo "</table>";
 
  }				
 
}

thanks you've been a great help!

sorry but what you did is the same as what i did the table appears like this

ITEM NAME ITEM PRICE
pencil 10.00
notebook20.00pen15.00

seems like the other items don't belong on the table

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