數組中隨機顯示一個?

<code> $arry = array('A','B','C','D');
$result = array_rand($arry,2);
foreach ($result as $val) 
{
echo $arry["$val"].""; 
}
</code>

<code> $arry = array('A','B','C','D');
$result = array_rand($arry,2);
foreach ($result as $val) 
{
echo $arry["$val"].""; 
}
</code>

<code>
mixed array_rand ( array $array [, int $num = 1 ] )
# Picks one or more random entries out of an array, and returns the key (or keys) of the random entries. It uses a pseudo random number generator that is not suitable for cryptographic purposes.
</code>

<code><?php
$arry = array('A','B','C','D');
</code>

<code><?php
$arry = array('A','B','C','D');
$rand_key = array_rand($array, 1);
echo $array[$rand_key];
</code>

<code class="php">$array = array('A','B','C','D');
$newArray = $array;
shuffle($newArray);
echo $newArray[0];
</code>

<code class="php">    $result = array_rand($arry,2); // 是一个**数组** 如[1,2,3]
    $result = array_rand($arry,1); // 只是一个**数字** 如 1, 并不是[1]
</code>