Description:
------------
hi, in php is missing a visibility identifier to protect methods and properties inside the namespace

example:

namespace Oracle;  // abstraction layer for Oracle

class Connection
{
    // ociresource should be visible only in the namespace
    // in php 5.3 the property is public to world
    namespace-protected $ociresource;

    public function __construct()
    {
         $this->ociresource = oci_connect();
    }
    public function query($sql)
    {
         return new Query($this, $sql);
    }
}

class Query
{
    public function __construct(Connection $con, $sql)
    {
         $x = oci_parse($con->ociresource, $sql);    // $ociresource is accessible only in this namespace
         oci_execute($x);
    }
}

----

suggested visibility identifier:

namespace-private
    (if namespace is \Test\Abc\ the method/property is only accessible within \Test\Abc\)
namespace-protected
    (if namespace is \Test\Abc\ the method/property can be accessible within \Test\Abc\ and, for example \Test\Abc\Foo\ )