Multiple Values in a checkbox

[GPlev]

I have  a form that has a list of checboxes, each checkbox has multiple values. IE. Checkbox1 has Date 1 and Cost1. Checkbox2 has Date2 and cost2 and so on.

This is what I have in form.

echo "<input type=checkbox name=service_id[] value=".$id."><label>".$description."</label> Date:<input type=date name=date[] value=".date('Y-m-d').">Date:<input type=number name=cost[] value=".$cost."><br>";

When i run the for loop to insert the values into a table i have this.

foreach($_POST['service_id'] as $key => $value){
$cat1=$_POST['service_id'][$key];
$cat2=$_POST['date'][$key];
$cat3=$_POST['cost'][$key];}

The problem is that when I select certain boxes (ie, checkbox #2), it inserts Date1 and Cost1 but does use the correct service id (ie checkbox)
I am clearly not storing the values into the array correctly. Any thoughts?

[Barand]

Only checked checkboxes are posted so doing it that way the indexes can get out of synch.

I'd recommend using the id as the input array keys.

<input type=checkbox name='service_id[$id]' .. >

<input type='date' name='date[$id]' .. >

etc

Edited April 11, 2021 by Barand

[GPlev]

that worked. thank you