PHP Array & для каждого

Question

Я использую многомерный массив в php, я хотел бы знать, как получить «имя поля» значения, которое я возвращаю в цикле foreach.

$_SESSION['filter']['dateCreation'] = 'ASC';
$_SESSION['filter']['client'] = 'test';

print_r($_SESSION['filter']);
foreach ($_SESSION['filter'] as $filter)
{
    // how do I echo the name of the field here? Eg. dateCreation
    echo $filter;
}

Answer 1

foreach ($_SESSION['filter'] as <b>$keyname =></b> $filter)
echo "$keyname value is $filter\n";

Answer 2

foreach ( $array as $key => value)
{
    ...
}

Php документация .

Answer 3

foreach ($_SESSION['filter'] as $field_name=>$filter)
{
    echo $field_name, $filter;
}

Answer 4

foreach ($_SESSION['filter'] as $key => $value) ...