PHP-php 生成随机数组并排序

Question

php 生成随机数组并排序

$red = array('1'=>"01",'2'=>"02",'3'=>"03",'4'=>"04",'5'=>"05",'6'=>"06",'7'=>"07",'8'=>"08",'9'=>"09",'10'=>"10",'11'=>"11",'12'=>"12",'13'=>"13",'14'=>"14",'15'=>"15",'16'=>"16",'17'=>"17",'18'=>"18",'19'=>"19",'20'=>"20",'21'=>"21",'22'=>"22",'23'=>"23",'24'=>"24",'25'=>"25",'26'=>"26",'27'=>"27",'28'=>"28",'29'=>"29",'30'=>"30",'31'=>"31",'32'=>"32",'33'=>"33");
$t = $red[rand(0,33)].$red[rand(0,33)].$red[rand(0,33)].$red[rand(0,33)].$red[rand(0,33)].$red[rand(0,33)];

Answer 1

可以把字符串打散、排序再合并：

$red = array('1'=>"01",'2'=>"02",'3'=>"03",'4'=>"04",'5'=>"05",'6'=>"06",'7'=>"07",'8'=>"08",'9'=>"09",'10'=>"10",'11'=>"11",'12'=>"12",'13'=>"13",'14'=>"14",'15'=>"15",'16'=>"16",'17'=>"17",'18'=>"18",'19'=>"19",'20'=>"20",'21'=>"21",'22'=>"22",'23'=>"23",'24'=>"24",'25'=>"25",'26'=>"26",'27'=>"27",'28'=>"28",'29'=>"29",'30'=>"30",'31'=>"31",'32'=>"32",'33'=>"33"); 

$t = $red[rand(1,33)].$red[rand(1,33)].$red[rand(1,33)].$red[rand(1,33)].$red[rand(1,33)].$red[rand(1,33)]; //$red没下标0

$arr = str_split($t, 2);
sort($arr);
$t = join($arr);

print_r($t);

实现同样的功能，建议先生成一个数组（参考@php如何生成十进制00到20之间的2位随机数）。

for ($i = 0; $i < 6; $i++) {
    $t[] = sprintf("%'02d", rand(1,33));
}
sort($t);
$t = join($t);