Question

Is there a way to traverse an array such as $_POST to see the field names and not just the values. To see the values I do something like this.

foreach ($_POST as $value){
echo $value;
}

This will show me the values – but I would like to also display the names in that array. If my $_POST value was something like $_POST[‘something’] and it stored 55; I want to output “something”.

I have a few select fields that I need this for.

Answer 1

You mean like this?

foreach ( $_POST as $key => $value )
{
  echo "$key : $value <br>";
}

you can also use array_keys if you just want an array of the keys to iterate over.

You can also use array_walk if you want to use a callback to iterate:

function test_walk( &$value, $key )
{
  ...do stuff...
}

array_walk( $arr, 'test_walk' );