Question

我有一个PHP数组，我使用Zend_Debug将其转储到下面：

    $ids = array(13) {
  [0] => string(1) "7"
  [1] => string(1) "8"
  [2] => string(1) "2"
  [3] => string(1) "7"
  [4] => string(1) "8"
  [5] => string(1) "4"
  [6] => string(1) "7"
  [7] => string(1) "3"
  [8] => string(1) "7"
  [9] => string(1) "8"
  [10] => string(1) "3"
  [11] => string(1) "7"
  [12] => string(1) "4"
}

我试图获取数组中每个数字出现的次数并将其输出到数组中。

我已尝试使用array_count_values($ids)，但它按大多数顺序输出，但我无法得到数字出现的总时间。它给了我以下输出：

    array(5) {
  [7] => int(5)
  [8] => int(3)
  [2] => int(1)
  [4] => int(2)
  [3] => int(2)
}

我可以从上面的数组中看到7次出现5次，但是当我遍历数组时我可以访问它！

有什么想法吗？

干杯

学家

Answer 1

您可以像这样访问您想要的数据：

$ids = array( ...);

$array = array_count_values( $ids);
foreach( $array as $number => $times_number_occurred) {
    echo $number . ' occurred ' . $times_number_occurred . ' times!';
}

<强>输出：

7 occurred 5 times!
8 occurred 3 times!
2 occurred 1 times!
4 occurred 2 times!
3 occurred 2 times!

Demo

Answer 2

使用foreach构造循环生成的数组：

$res = array_count_values($ids);

foreach( $res as $value => $count ) {
  // your code here
  echo "The value ".$value." appeared ".$count." times in the array";
}

PHP计算数值数组中出现的次数

2 个答案: