如何從preg_match獲取命名捕獲？

Question

可能重複：
how to force preg_match preg_match_all to return only named parts of regex expression

我有這樣的片段：

$string = 'Hello, my name is Linda. I like Pepsi.'; 
$regex = '/name is (?<name>[^.]+)\..*?like (?<likes>[^.]+)/'; 

preg_match($regex, $string, $matches); 

print_r($matches); 

此打印：

Array 
(
    [0] => name is Linda. I like Pepsi 
    [name] => Linda 
    [1] => Linda 
    [likes] => Pepsi 
    [2] => Pepsi 
) 

我怎麼能GE t將其剛剛返回：

Array 
(
    [name] => Linda 
    [likes] => Pepsi 
) 

而不訴諸結果數組的過濾：

foreach ($matches as $key => $value) { 
    if (is_int($key)) 
     unset($matches[$key]); 
} 

Answer 1

的preg_match將總是返回數值索引無論命名捕獲組

Answer 2

return array(
    'name' => $matches['name'], 
    'likes' => $matches['likes'], 
); 

某種類型的過濾器，肯定的。