Question

我有一个多维数组，我想从中选择11个不同的单词。来自不同数组索引的每个单词。

array (
  'w' => 
  array (
    0 => 'walls',
    1 => 'well',
    2 => 'why',
  ),
  'e' => 
  array (
    0 => 'end',
  ),      
  'a' => 
  array (
    0 => 'advantage',
    1 => 'afford',
    2 => 'affronting',
    3 => 'again',
    4 => 'agreeable',
    5 => 'ask',
    6 => 'at',
  ),
  'c' => 
  array (
    0 => 'children',
    1 => 'civil',
    2 => 'continual',
  )
);

我的欲望输出：

From w => well
From e => end
From a => again
and so on.

输出如： array(well, end, again, ...) as array.

Answer 1

使用以下代码：

$f = array_keys($result);  // grouping the indices, namely, the characters
$a = "";
for($c=0;$c<count($f);$c++){
    $a .= $f[$c];
} // grouping the indices stored in array $f to a string, $a
$words = array();
for($c=0;$c<11;$c++){
    $random = $a[rand(0,strlen($a)-1)];
    $k = $result[$random];
    // $k stores the array of the character index, stored in $result
    $random2 = rand(0,count($k)-1);
    $words[$c] = $k[$random2];
    // choose a word from a given character array
    $a = preg_replace("/".$random."/","",$a);
    // remove the character from $a to prevent picking words which start with the same character
}

print_r($words);

我已经过测试，证明有效

https://3v4l.org/qi1VP

Answer 2

您可以使用array_rand()函数实现此功能：

<强> PHP

$words = [];
$limit =  3; //Replace this with your limit, 11
$count = 0;
shuffle($array);
foreach($array as $key => $value) {
   $words[] = $value[array_rand($value)];
   $count++;
   if ($limit == $count) {
       break;
   }
}

EvalIn

Answer 3

Check Online，请告诉我。

使用shuffle和array_slice即可获得所需内容。

shuffle函数使您的数组随机，并从中array slice切片11子数组。数组切片有3个参数，第一个是数组，第二个是你想要开始的偏移量，最后一个是你需要切割的数量。

$words = array();
shuffle($result);
$res = array_slice($result, 0, 11);
foreach($res as $key => $value){
    shuffle($value);
    $words[] = $value[0];
}
print_r($words);

从多维数组中随机选择单词

3 个答案: