Concatenating checkbox values before post?

[gregincolumbus]

Is it possible to concatenate the values of 12 checkboxes into one value (separated by pipes)?

Box1 value|Box2 value |box3 value | ...etc


Thank you in advance for any help

Greg

[pbmods]

Heya, Greg.

Try naming each checkbox using brackets:

<input name="option[]" ... /> Option 1
<input name="option[]" ... /> Option 2
<input name="option[]" ... /> Option 3
<input name="option[]" ... /> Option 4
 

This will create an array on the PHP side ~_^

[gregincolumbus]

Heya, Greg.

Try naming each checkbox using brackets:

<input name="option[]" ... /> Option 1
<input name="option[]" ... /> Option 2
<input name="option[]" ... /> Option 3
<input name="option[]" ... /> Option 4
 

This will create an array on the PHP side ~_^

Sorry I am a newbie...what do I do next with this? I need the checkbox values to be placed into a single field that I can post to Paypal without having an intermediate php page.

Thanks in advance for any help

Greg

[acoder]

Sorry I am a newbie...what do I do next with this? I need the checkbox values to be placed into a single field that I can post to Paypal without having an intermediate php page.

What format does PayPal require it to be in?

[gregincolumbus]

Paypal allows up to 10 user defined fields (USER1, USER2, etc) These are stored then posted back to the site who submitted the data for payment processing.....I can then write them to the database.

I just need a variable called "USER4" that contains the selected checkbox data...ideally separated by pipes ("|"). So if the checkbox choices were:

checkbox1 value="Monday"
checkbox2 value="Tuesday"
checkbox3 value="Wednesday"
checkbox4 value="Thursday"

and the user checked "Monday" and Wednesday"....the field "USER4" would contain:

"Monday||Wednesday"


The key here is that I need to get the concatenated value BEFORE posting....so using the implode function in PHP won't work.

Any help is appreciated...this is the LAST thing I need to get working before finishing a project that was truthfully beyond my skill level :)

Thanks
Greg

[acoder]

Is it necessary to use checkboxes for this? You could use a multiple select.

Anyway, loop over the checkboxes and check the checked property of each checkbox, e.g.

var checkboxes = document.getElementsByName("checkboxname");
for (i = 0; i < checkboxes.length; i++) {
  if (checkboxes[i].checked) {
  //concatenate
  }
}

[gregincolumbus]

Thanks for the tip..I will give it a try

I think I need to use checkboxes because the actual number of checkboxes is 12 and I need to limit the actual number of checkboxes selected to 5.......would I be able to do that with multi select?


Greg

[acoder]

I think I need to use checkboxes because the actual number of checkboxes is 12 and I need to limit the actual number of checkboxes selected to 5.......would I be able to do that with multi select?

You could do, but you will need to add a bit of Javascript checking onchange.