$arr = array(

    array(

        "id"=>1,

        "name"=>"张三",

        "sex"=>"男",

        "age"=>22

    ),

    array(

        "id"=>3,

        "name"=>"李萍",

        "sex"=>"女",

        "age"=>18

    ),

    array(

        "id"=>4,

        "name"=>"黄山",

        "sex"=>"男",

        "age"=>12

    ),

    array(

        "id"=>5,

        "name"=>"何妹梅",

        "sex"=>"女",

        "age"=>32

    ),

    array(

        "id"=>6,

        "name"=>"汤大丰",

        "sex"=>"男",

        "age"=>35

    )

);

print_r($arr);

shuffle($arr);

echo "<br/>排序后<br/>";

print_r($arr);

die;