php - 组数组数据 PHP

Question

我有以下数组...

[0] => Array
(
  [Name] => Steve Richard
  [Car_Colour] => Red
)

[1] => Array
(
  [Name] => Scott Lucas
  [Car_Colour] => Orange
)

[2] => Array
(
  [Name] => Danny Sisum
  [Car_Colour] => Red
)

[3] => Array
(
  [Name] => Alice Small
  [Car_Colour] => Green
)

我如何输出数组中的数据，但按汽车颜色对数据进行分组，这样拥有两辆红色汽车的人将出现在红色标题下方，而其他人则出现在橙色和绿色标题下方？

示例:

People with **Red** cars

    Name:** Steve Richard
    Car Colour:** Red

    Name:** Danny Sisum
    Car Colour: Red

People with **Orange** cars

    Name:** Scott Lucas
    Car Colour:** Orange

People with **Green** cars

    Name:** Alice Small
    Car Colour:** Green

Answer 1

你可以试试

$array = array(
        "0" => Array("Name" => "Steve Richard","Car_Colour" => "Red"),
        "1" => Array("Name" => "Scott Lucas","Car_Colour" => "Orange"),
        "2" => Array("Name" => "Danny Sisum","Car_Colour" => "Red"),
        "3" => Array("Name" => "Alice Small","Car_Colour" => "Green"));

$list = array();
foreach($array as $data)
{
    $list[$data['Car_Colour']][] = $data;
}

var_dump($list);

像上面那样显示它们

echo "<pre>";
foreach($list as $color => $data)
{
    printf("People with **%s** cars\n",$color);

    foreach($data as $info)
    {
        printf("\tName:** %s\n",$info['Name']);
        printf("\t Car Colour:** %s\n",$info['Car_Colour']);
    }
    print(PHP_EOL);
}

输出

People with **Red** cars
    Name:** Steve Richard
     Car Colour:** Red
    Name:** Danny Sisum
     Car Colour:** Red

People with **Orange** cars
    Name:** Scott Lucas
     Car Colour:** Orange

People with **Green** cars
    Name:** Alice Small
     Car Colour:** Green