从特定数量的数组中计数值并返回出现

Question

我有一个二维数组，如下所示：$array1 = array   (   array(1, "Harry", "Male", 30),   array(2, "Troy", "Male", 4),   array(3, "Vicky", "Female", 22),   );我想返回第四个“列”超过固定数目10的次数因此，例如，我追逐以下内容：MalesUnder10 = MalesOver10 = FemalesUnder10 = MalesOver10 = 谢谢，

Answer 1

您可以array_filter用来过滤数组。使用count计数结果

$array1 = array (

   array(1, "Harry", "Male", 30),

   array(2, "Troy", "Male", 4),

   array(3, "Vicky", "Female", 22),

);

$MalesUnder10 = count(array_filter( $array1, function( $o ){

    return $o[2] == "Male" && $o[3] < 10;

}));

$MalesOver10 = count(array_filter( $array1, function( $o ){

    return $o[2] == "Male" && $o[3] > 10;

}));

$FemalesUnder10 = count(array_filter( $array1, function( $o ){

    return $o[2] == "Female" && $o[3] < 10;

}));

$FemalesOver10 = count(array_filter( $array1, function( $o ){

    return $o[2] == "Female" && $o[3] > 10;

}));

这将导致：

$MalesUnder10 = 1

$MalesOver10 = 1

$FemalesUnder10 = 0

$FemalesOver10 = 1

注意： 10岁以下的人不会指望逻辑。您可以通过$o[3] => 10或更改它$o[3] =< 10