PHP：查找数组索引号？

Question

对于任何真正想要挑战的人！ :)

我怎么会去使用一个字符串，如Wonder Bingo = 0

array(4) { 
    ["eirepanel_inline_ads_options_saved"]=> 
    string(4) "true" 
    ["eirepanel_inline_ads_options_name"]=> 
    array(2) { 
    [0]=> 
    string(12) "Wonder Bingo" 
    [1]=> 
    string(10) "City Bingo" 
    } 
    ["eirepanel_inline_ads_options_affiliate_link"]=> 
    array(2) { 
    [0]=> 
    string(20) "/visit/wonder_bingo/" 
    [1]=> 
    string(17) "/visit/city_bingo" 
    } 
    ["eirepanel_inline_ads_options_thumbnail"]=> 
    array(2) { 
    [0]=> 
    string(45) "http://www.freenodepositbingo.co.uk/image.png" 
    [1]=> 
    string(46) "http://www.freenodepositbingo.co.uk/image2.png" 
    } 
} 

Answer 1

$str = preg_replace('/ = \d+$/', '', 'Wonder Bingo = 0'); 

$key = array_search($str, $array['eirepanel_inline_ads_options_name']); 

Answer 2

对不起球员找到的eirepanel_inline_ads_options_name指数，只是理解了它。

echo $key = array_search('WonderBingo', $eirepanel_inline_ads_options['eirepanel_inline_ads_options_name']); 

Answer 3

解释要求Wonder Bingo = 0意义的0索引的搜索关键字等于"Wonder Bingo"：

function find($needle, $haystack) { 
    preg_match('/^(.+) = (\d+)$/', $needle, $matches); 
    foreach ($haystack as $key => $value) { 
     if (isset($value[$matches[2]]) && $value[$matches[2]] == $matches[1]) { 
      return $key; 
     } 
    } 
}