php数组foreach循环跳过单个键值

Question

我试图让foreach循环显示数组的所有值，但由于某种原因，它跳过了值4。

echo $sku."<br>";
$skuArray = explode(" ", $sku);
$skuCount = array_count_values($skuArray);
print_r($skuArray);
echo "<br><br>";
$i=0;
foreach ($skuCount as $key => $val) {
    echo "[".$i."] => ".$key." ";
    $i++;
}

下面是输出的样子：

1DALI0SPBA775RW 2 $92.99 1GJESSGRIP10000 2 $9.99

Array ( [0] => 1DALI0SPBA775RW 
        [1] => 2 
        [2] => $92.99 
        [3] => 1GJESSGRIP10000 
        [4] => 2 
        [5] => $9.99 )

[0] => 1DALI0SPBA775RW 
[1] => 2 
[2] => $92.99 
[3] => 1GJESSGRIP10000 
[4] => $9.99

正如您所看到的，foreach循环表明4等于$9.99，但在print_r数组中它等于2-这正是我期望的结果。

Answer 1

这就是你想要的：

echo $sku."<br>";
$skuArray = explode(" ", $sku);
print_r($skuArray);
echo "<br><br>";
$i=0;
foreach ($skuArray as $key => $val) {
    echo "[".$key."] => ".$val." ";
}

array_count_values($skuArray)实际上创建了一个可以遍历的数组，但将重复项省略为一个值。请参阅documentation。