Question

我正在做什么：我有一个包含＃项目的txt文件。我还有一个图像目录，其中包含这些项目＃＆＃39; s作为其文件名的前缀，但也有一些其他字符串（由-分隔），然后是文件扩展名（.jpg）。

问题：我的功能运行良好，但结果数组（$overlap）需要采用图片原来的格式，因为我要去将此数组写入CSV文件，以便我可以导入它。但是为了找到匹配项，我不得不在图像文件名上删除原始格式（所以array_intersection()会起作用），但现在我需要恢复它。

以下是当前代码：

function test() {

    function sanitize_items($value) {
        # Convert to uppercase, remove whitespace, then remove .JPG extension.
        # If the name has a "-", return the part before it.
        $base = basename( trim(strtoupper($value)), '.JPG' );
        $temp = explode('-', $base);
        return $temp[0];
    }

    $file = file('items.txt', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
    $img = scandir('img');

    $file = array_map('sanitize_items', $file);
    $img  = array_map('sanitize_items', $img);

    $overlap = array_intersect($file, $img);
    echo "<pre>";
    print_r($overlap); # returns the matches, but not in the format I need.
}

这是$overlap当前返回的内容：

Array
(
[0] => DEC308A
[1] => DEC308B
[2] => DEC309A
...
)

我需要它来返回交叉点但是在sanitize_items()运行之前的方式：

Array
(
[0] => DEC308A-2020.jpg
[1] => DEC308B-2020.jpg
[2] => DEC309A-2300.jpg
...
)

Answer 1

我建议不要使用array_map()（不能保留数组键）来应用您的清理函数，而是建议在两个输入上执行foreach()循环以生成一个新数组字符串如DEC308A作为关联数组键，原始的完整.jpg字符串作为其值。然后，您可以在它们之间调用array_intersect_key()以生成交叉点输出，该输出具有缩短/消毒的字符串（在键中）和原始字符串（在值中）。

// Keep this function as it is...
function sanitize_items($value) {
    # Convert to uppercase, remove whitespace, then remove .JPG extension.
    # If the name has a "-", return the part before it.
    $base = basename( trim(strtoupper($value)), '.JPG' );
    $temp = explode('-', $base);
    return $temp[0];
}

$file = file('items.txt', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
$img = scandir('img');

// Temporary sanitized arrays:
$file_sanitized = array();
$img_sanitized = array();

// Loop over the input arrays and store them as key => value
// pairs, where the sanitized string is the key
foreach ($file as $f) {
  // Produces $file_sanitized['DEC308A'] = 'DEC308A-2020.jpg';
  $file_sanitized[sanitize_items($f)] = $f;
}
// Same kind of thing for $img...
foreach ($img as $i) {
  $img_sanitized[sanitize_items($i)] = $i;
}

// Now compare for intersection by key
$overlap = array_intersect_key($file_sanitized, $img_sanitized);

//-------------------------------- 
// Note, not sure of your inputs but you might need to reverse the args favoring
// $img_sanitized so you get those resultant values rather than what was in the file...
// $overlap = array_intersect_key($img_sanitized, $file_sanitized);

echo "<pre>";
print_r($overlap);

如果你真的想要最后的普通数字键，而不是DEC308A之类的字符串，只需在其上调用array_values()：

$overlap = array_values($overlap);

＆＃34; Unsanitizing＆＃34;数组中的元素

1 个答案: