记录php中一种骚操作

$options = array(
    'config' => array(
        'aaa' => 111,
        'bbb' => 222,
    ),
    'headers' => array(
        'Content-Type' => 'application/json;charset=utf-8'
    ),
    'params' => array(
        'p1' => 'hello',
        'p2' => 'world',
    ),
    'signOptions' => array(
        'ccc' => '333',
    ),
);

list($config,$headers,$params,$signOptions) = parseOptions($options,'config','headers','params','signOptions');
echo '<pre>';
print_r($config);
echo '<br>';
print_r($headers);
echo '<br>';
print_r($params);
echo '<br>';
print_r($signOptions);
echo '<br>';

function parseOptions(array $options) {
    return doParseOptions($options,array_slice(func_get_args(), 1),false);
}

function doParseOptions(array $options,array $args,$allowExtraOptions) {
    $result = array();
    foreach ($args as $arg) {
        if (isset($options[$arg])) {
            $result[] = $options[$arg];
            unset($options[$arg]);
        } else {
            $result[] = null;
        }
    }
    if (!$allowExtraOptions && count($options) > 0) {
        throw new \InvalidArgumentException(
            'Unexpected options:' . implode(',', array_keys($options))
            . ' Acceptable options are:' . implode(',', $args)
        );
    }
    return $result;
}

输出结果：

Array
(
    [aaa] => 111
    [bbb] => 222
)

Array
(
    [Content-Type] => application/json;charset=utf-8
)

Array
(
    [p1] => hello
    [p2] => world
)

Array
(
    [ccc] => 333
)

关注点：

php中的元组，获取参数列表函数