I have a very simple form on my website.

I run this PHP to loop the form contents:

echo '<pre>';
var_dump($_POST);
echo '</pre>';

$i = 0;

foreach($_POST as $key => $value)
{

    $i  ;
    echo $value[$i]['row_id'];

}

I get the below:

array(1) {
  ["data"]=> array(2) {
            [1]=>  array(2) {
                ["row_id"]=> string(5) "33714"
                ["sport"]=> string(8) "swimming"
            }
            [2]=> array(2) {
                ["row_id"]=> string(5) "33715"
                ["sport"]=> string(8) "football"
            }
  }
}

33714

My PHP only echoes the first row id 33714 instead of both rows.

I feel I'm missing something obvious here.

CodePudding user response：

You're looping over the wrong thing and you're simultaneously using two different methods to loop over the same thing.

1. You set $i to 0
2. Your foreach loop reaches $_POST['data']
3. You change $i to 1
4. You access $_POST['data'][1]
5. You get to the end of the loop

You need to loop over what you actually want to loop over.

data is a fixed thing, so hard code that. Then loop over the array it contains.

Only use a $i variable if you are using a regular for loop.

When you use foreach you use the variable(s) you define inside it (in this case $key and $value).

foreach($_POST['data'] as $key => $value) {
    echo $value['row_id']
}

CodePudding user response：

Simply put, you need to loop the items of $_POST['data'] instead of just $_POST

echo '<pre>';
var_dump($_POST);
echo '</pre>';

foreach($_POST['data'] as $key => $item)
{
    echo $key.':'. $item['row_id'];

}