如何使用 PHP 递归复制目录的内容？

使用 PHP 复制目录内容

当尝试将目录内容复制到另一个位置时，代码 copy ("old_location/*.*"," new_location/") 可能会遇到错误，指示未找到该流。当在复制函数中单独使用星号 (*) 时，可能会发生这种情况。

为了有效复制目录的全部内容（包括其子目录和文件），我们可以使用如下递归函数：

<code class="php">function recurseCopy(
    string $sourceDirectory,
    string $destinationDirectory,
    string $childFolder = ''
): void {
    // Open the source directory
    $directory = opendir($sourceDirectory);

    // Check if the destination directory exists, if not, create it
    if (is_dir($destinationDirectory) === false) {
        mkdir($destinationDirectory);
    }

    // If there's a child folder specified, create it if it doesn't exist
    if ($childFolder !== '') {
        if (is_dir("$destinationDirectory/$childFolder") === false) {
            mkdir("$destinationDirectory/$childFolder");
        }

        // Loop through the files in the source directory
        while (($file = readdir($directory)) !== false) {
            // Ignore current and parent directories
            if ($file === '.' || $file === '..') {
                continue;
            }

            // If the current file is a directory, recursively copy it
            if (is_dir("$sourceDirectory/$file") === true) {
                recurseCopy("$sourceDirectory/$file", "$destinationDirectory/$childFolder/$file");
            }
            // If it's a file, simply copy it
            else {
                copy("$sourceDirectory/$file", "$destinationDirectory/$childFolder/$file");
            }
        }

        // Close the source directory
        closedir($directory);

        // Recursion ends here
        return;
    }

    // Loop through the files in the source directory
    while (($file = readdir($directory)) !== false) {
        // Ignore current and parent directories
        if ($file === '.' || $file === '..') {
            continue;
        }

        // If the current file is a directory, recursively copy it
        if (is_dir("$sourceDirectory/$file") === true) {
            recurseCopy("$sourceDirectory/$file", "$destinationDirectory/$file");
        }
        // If it's a file, simply copy it
        else {
            copy("$sourceDirectory/$file", "$destinationDirectory/$file");
        }
    }

    // Close the source directory
    closedir($directory);
}</code>

通过使用这个递归函数，我们可以高效地将一个目录的全部内容复制到另一个位置，确保所有子目录和文件都正确传输。

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