배열의 요소를 무작위 순서로 재배열하는 PHP 함수 array_rand

<?php
    $textArray = array(&#39;1&#39;,&#39;2&#39;,&#39;3&#39;,&#39;4&#39;,&#39;5&#39;,&#39;6&#39;,&#39;7&#39;);
    shuffle($textArray);
    print_r($textArray);
?>

Array ( [0] => 6 [1] => 3 [2] => 7 [3] => 4 [4] => 1 [5] => 2 [6] => 5 )

<?php
    $arry = array(&#39;A&#39;,&#39;B&#39;,&#39;C&#39;,&#39;D&#39;);
    $result = array_rand($arry,2);
    foreach ($result as $val) {
    echo $arry["$val"].""; }
?>

<?php
    $a=array("red","green","blue","yellow","brown");
    $random_keys=array_rand($a,3);echo $a[$random_keys[0]]."<br>";
    echo $a[$random_keys[1]]."<br>";echo $a[$random_keys[2]];
  ?>

array_rand(array,number)

<?php
$a=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
print_r(array_rand($a,1));
?>

<?php
$a=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
print_r(array_rand($a,2));
?>