KitOsorgin

async function dictionary(word) {
    var response = await $.ajax({
        type: "POST",
        url: "php/post.php",
        data: {'word':word},
        dataType: 'json'
    });
    console.log('Получен ответ сервера:');
    console.dir(response);
    return response;
}

function test($str) {
            $a=5;
            $b=str_replace('$a', $a, $str);
            return $b;
}

echo test('Моя строка $a');

if (login_type == 1) {
	$('#emailAd').show();		
	$('#phoneAd').hide();
} else if (login_type == 2) {
	$('#emailAd').hide();		
	$('#phoneAd').show();
}