getting a checkbox array value from POST

Question

i am posting an array of checkboxes. and i cant get it to work. i didnt include the proper syntax in the foreach loop to keep it simple. but it is working. i tested in by tr

Answer 1

Your $_POST array contains the invite array, so reading it out as

<?php
if(isset($_POST['invite'])){
  $invite = $_POST['invite'];
  echo $invite;
}
?>

won't work since it's an array. You have to loop through the array to get all of the values.

<?php
if(isset($_POST['invite'])){
  if (is_array($_POST['invite'])) {
    foreach($_POST['invite'] as $value){
      echo $value;
    }
  } else {
    $value = $_POST['invite'];
    echo $value;
  }
}
?>

Answer 2

// if you do the input like this
<input id="'.$userid.'" value="'.$userid.'"  name="invite['.$userid.']" type="checkbox">

// you can access the value directly like this:
$invite = $_POST['invite'][$userid];

Answer 3

I just used the following code:

<form method="post">
    <input id="user1" value="user1"  name="invite[]" type="checkbox">
    <input id="user2" value="user2"  name="invite[]" type="checkbox">
    <input type="submit">
</form>

<?php
    if(isset($_POST['invite'])){
        $invite = $_POST['invite'];
        print_r($invite);
    }
?>

When I checked both boxes, the output was:

Array ( [0] => user1 [1] => user2 )

I know this doesn't directly answer your question, but it gives you a working example to reference and hopefully helps you solve the problem.

Answer 4

Check out the implode() function as an alternative. This will convert the array into a list. The first param is how you want the items separated. Here I have used a comma with a space after it.

$invite = implode(', ', $_POST['invite']);
echo $invite;

Answer 5

Because your <form> element is inside the foreach loop, you are generating multiple forms. I assume you want multiple checkboxes in one form.

Try this...

<form method="post">
foreach{
<?php echo'
<input id="'.$userid.'" value="'.$userid.'"  name="invite[]" type="checkbox">
<input type="submit">';
?>
}
</form>