How to print_r $_POST array?

Question

I have following table.

Answer 1

Because you have nested arrays, then I actually recommend a recursive approach:

function recurse_into_array( $in, $tabs = "" )
{
    foreach( $in as $key => $item )
    {
        echo $tabs . $key . ' => ';
        if( is_array( $item ) )
        {
            recurse_into_array( $item, $tabs . "\t" );
        }
        else
        {
            echo $tabs . "\t" . $key;
        }
    }
}

recurse_into_array( $_POST );