将一个数组中的某些值与另一个数组中的值组合

Question

我想将 $url 中包含前缀 lt_ 的值与 $color 中的值合并，并创建一个新数组 $new。 $url 和 $color 数组都存储接下来 36 小时的值：

print_r($url);

产出

 Array(
     [0]  => "http://example.com/color/green.png",
     [1]  => "http://example.com/color/lt_green.png",
     [2]  => "http://example.com/color/lt_blue.png",
     [3]  => "http://example.com/color/blue.png",
     [4]  => "http://example.com/color/blue.png",
     [5]  => "http://example.com/color/yellow.png",
     ..
     [35] => "http://example.com/color/lt_blue.png",
     );

和

print_r($color);

产出

Array(
     [0]  => "Green",
     [1]  => "Green",
     [2]  => "Blue",
     [3]  => "Blue",
     [4]  => "Blue",
     [5]  => "Yellow",
     ...
     [35] => "Blue",
     );

我设法在 $url 中找到了字符串部分 lt_ 并在 $new 中找到了键，但是我如何添加 "Light" （或 lt_) 到 $color 中的相应值以填充 $new?

$new = array(
     [0]  => "Green",
     [1]  => "Light Green",
     [2]  => "Light Blue",
     [3]  => "Blue",
     [4]  => "Blue",
     [5]  => "Yellow",
     ...
     [35] => "Light Blue",
 );

我成功地创建了一个数组，其中只有键值包含 lt_:

$lt = 'lt_';
foreach($url as $key1=>$value1)
{
  foreach($color as $key2=>$value2)
  {
      if (strpos($value1,$lt) !== false)
      {
          $new[$key1] = array();
      }
  }
}

Answer 1

如果两个数组的大小相同且索引对应，则可以根据条件迭代并向新数组添加带前缀或不带前缀的颜色：

$arr = Array("http://example.com/color/green.png",
    "http://example.com/color/lt_green.png",
    "http://example.com/color/lt_blue.png",
    "http://example.com/color/blue.png",
    "http://example.com/color/blue.png",
    "http://example.com/color/yellow.png",);

$arr2 = Array(
    "Green",
    "Green",
    "Blue",
    "Blue",
    "Blue",
    "Yellow",);

$new = array();
for ($i = 0; $i < count($arr2); $i += 1) {
    (strpos($arr[$i], 'lt_') !== false) ?
                    $new[] = "Light " . $arr2[$i] :
                    $new[] = $arr2[$i];
}
print_r($new);

将一个数组中的某些值与另一个数组中的值组合

Combine certain values in one array with values in another array

php

arrays

foreach