PHP

Question

假设我有这两个目录路径：

"/www/website/news/old/"

"/www/library/js/"

我需要一个 PHP 函数来输出从一个目录到另一个目录的相对路径。在此示例中，它应该输出类似于 "../../../library/js/"

Answer 1

以下函数可以完成这项工作：

function getRelativePath($source, $destination) {
    $sourceArray = [];
    preg_match_all('/([^\/]+)/', $source, $sourceArray);
    $destinationArray = [];
    preg_match_all('/([^\/]+)/', $destination, $destinationArray);
    
    $sourceArray = array_reverse($sourceArray[0]);
    $destinationArray = array_reverse($destinationArray[0]);
    
    $relative = [];
    $hasPath = false;
    foreach ($sourceArray as $path) {
        for ($i = 0; $i < count($destinationArray); $i++ ) {
            $to = $destinationArray[$i];
            if ($path == $to) {
                $hasPath = true;
                for ($j = $i - 1; $j >= 0 ; $j--)
                    $relative[] = $destinationArray[$j];
                break 2;    
            }
        }
        $relative[] = "..";
    }
    return $hasPath ? implode("/",$relative) . "/" : "NO PATH";
}

PHP - 获取从一个目录到另一个目录的相对路径

PHP - Get relative path from one directory to another

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