Iterating Through Array Created by Form Checkboxes

rsmith

Hey all!
I have a webform that has 6 checkboxes all of which if checked go into a hardware[] array. Each form element looks like this:

<input type="checkbox" name="hardware[]" value="Item Name">Item Name

 On my processing  page I pull the checkboxes into the variable called $hardware like this:

<?
     $hardware = $_POST['hardware'];
?>

 My question is this: I want to print the contents of the array to my page. I know I'm doing it wrong because it doesn't work but here's what I have now:

<? foreach($hardware['hardware'] AS $hwItem){
        	echo $hwItem.", ";
    	}
?>

 What is the proper syntax to iterate through the array and print the stored values of the array which is stored inside my $hardware variable???

TIA! I appreciate all help.

Ryan

NogDog

<? foreach($hardware AS $hwItem){
        	echo $hwItem.", ";
    	}
?>

Or, a way to avoid a trailing comma:

echo implode(', ', $hardware);

rsmith

Thanks! The first method worked great! I was close 😉 I would like to alleviate the trailing comma but the implode() method you posted yields a blank output.

Protato

rsmith wrote:
Thanks! The first method worked great! I was close 😉 I would like to alleviate the trailing comma but the implode() method you posted yields a blank output.

It's curious that implode isn't working, there's probably another problem lurking there (typo?). It should work without a problem as NogDog posted.

Could always substr_prelace to clear the trailing character, helpful if you have to take the elements out of the array to manipulate before displaying.

<?
//replace last character in string with an empty character.
$str = substr_replace($str, '', -1);
?>

rsmith

Protato wrote:
It's curious that implode isn't working, there's probably another problem lurking there (typo?). It should work without a problem as NogDog posted.

Could always substr_prelace to clear the trailing character, helpful if you have to take the elements out of the array to manipulate before displaying.
<?
//replace last character in string with an empty character.
$str = substr_replace($str, '', -1);
?>

I had considered doing the substr_replace() but how would I apply that to a string that is dynamic in length such as the one dependent on how many entries are in the hardware array?

Protato

the first character of the string is 0, each character there after increments this by one. This also works the opposite direction. the third var passed to substr_replace is the position of the character in the string to be replaced, -1 will always be the last character of the string.