//百度知道中的代码,mark一下
$data = array(
array(
"price" => "6874","air" => "国泰"
),
array(
"price" => "4726","air" => "大韩航空"
),
array(
"price" => "6569","air" => "国泰航空"
),
array(
"price" => "6569","air" => "卡塔尔航空"
),
array(
"price" => "3380","air" => "美国航空"
),
array(
"price" => "4200","air" => "泰国航空"
)
);
//随机选择出两个元素
$temp=array_rand($data,2);
//重组数组
foreach($temp as $val){
$data_last[]=$data[$val];
}
print_R($data_last);
//分享自 
每个人都需要一台速度更快、更稳定的 PC。随着时间的推移，垃圾文件、旧注册表数据和不必要的后台进程会占用资源并降低性能。幸运的是，许多工具可以让 Windows 保持平稳运行。
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