php 目录的递归复制

Recursive Copy of Directory

提问by Jason

On my old VPS I was using the following code to copy the files and directories within a directory to a new directory that was created after the user submitted their form.

在我的旧 VPS 上，我使用以下代码将目录中的文件和目录复制到用户提交表单后创建的新目录中。

function copyr($source, $dest)
{
   // Simple copy for a file
   if (is_file($source)) {
      return copy($source, $dest);
   }

   // Make destination directory
   if (!is_dir($dest)) {
      mkdir($dest);
      $company = ($_POST['company']);
   }

   // Loop through the folder
   $dir = dir($source);
   while (false !== $entry = $dir->read()) {
      // Skip pointers
      if ($entry == '.' || $entry == '..') {
         continue;
      }

      // Deep copy directories
      if ($dest !== "$source/$entry") {
         copyr("$source/$entry", "$dest/$entry");
      }
   }

   // Clean up
   $dir->close();
   return true;
}

copyr('Template/MemberPages', "Members/$company")

However now on my new VPS it will only create the main directory, but will not copy any of the files to it. I don't understand what could have changed between the 2 VPS's?

但是现在在我的新 VPS 上，它只会创建主目录，而不会将任何文件复制到其中。我不明白这两个 VPS 之间会发生什么变化？

回答by OzzyCzech

Try something like this:

尝试这样的事情：

$source = "dir/dir/dir";
$dest= "dest/dir";

mkdir($dest, 0755);
foreach (
 $iterator = new \RecursiveIteratorIterator(
  new \RecursiveDirectoryIterator($source, \RecursiveDirectoryIterator::SKIP_DOTS),
  \RecursiveIteratorIterator::SELF_FIRST) as $item
) {
  if ($item->isDir()) {
    mkdir($dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
  } else {
    copy($item, $dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
  }
}

Iterator iterate through all folders and subfolders and make copy of files from $sourceto $dest

迭代器遍历所有文件夹和子文件夹，并将文件复制$source到$dest

回答by James C

Could I suggest that (assuming it's a *nix VPS) that you just do a system call to cp -rand let that do the copy for you.

我是否可以建议（假设它是 *nix VPS），您只需对其进行系统调用cp -r并让它为您完成副本。

回答by Belovoj

I have changed Joseph's code (below), because it wasn't working for me. This is what works:

我已经更改了约瑟夫的代码（如下），因为它对我不起作用。这是有效的：

function cpy($source, $dest){
    if(is_dir($source)) {
        $dir_handle=opendir($source);
        while($file=readdir($dir_handle)){
            if($file!="." && $file!=".."){
                if(is_dir($source."/".$file)){
                    if(!is_dir($dest."/".$file)){
                        mkdir($dest."/".$file);
                    }
                    cpy($source."/".$file, $dest."/".$file);
                } else {
                    copy($source."/".$file, $dest."/".$file);
                }
            }
        }
        closedir($dir_handle);
    } else {
        copy($source, $dest);
    }
}

[EDIT] added test before creating a directory (line 7)

[编辑] 在创建目录之前添加测试（第 7 行）

回答by Joseph Beeson

Here's what we use at our company:

这是我们在公司使用的：

static public function copyr($source, $dest)
{
    // recursive function to copy
    // all subdirectories and contents:
    if(is_dir($source)) {
        $dir_handle=opendir($source);
        $sourcefolder = basename($source);
        mkdir($dest."/".$sourcefolder);
        while($file=readdir($dir_handle)){
            if($file!="." && $file!=".."){
                if(is_dir($source."/".$file)){
                    self::copyr($source."/".$file, $dest."/".$sourcefolder);
                } else {
                    copy($source."/".$file, $dest."/".$file);
                }
            }
        }
        closedir($dir_handle);
    } else {
        // can also handle simple copy commands
        copy($source, $dest);
    }
}

回答by Alain Tiemblo

The Symfony's FileSystem Componentoffers a good error handling as well as recursive remove and other useful stuffs. Using @OzzyCzech's great answer, we can do a robust recursive copy this way:

该Symfony的的文件系统组件提供了一个良好的错误处理以及递归删除和其他有用的东西。使用@OzzyCzech 的精彩回答，我们可以通过这种方式进行健壮的递归复制：

use Symfony\Component\Filesystem\Filesystem;

// ...

$fileSystem = new FileSystem();

if (file_exists($target))
{
    $this->fileSystem->remove($target);
}

$this->fileSystem->mkdir($target);

$directoryIterator = new \RecursiveDirectoryIterator($source, \RecursiveDirectoryIterator::SKIP_DOTS);
$iterator = new \RecursiveIteratorIterator($directoryIterator, \RecursiveIteratorIterator::SELF_FIRST);
foreach ($iterator as $item)
{
    if ($item->isDir())
    {
        $fileSystem->mkdir($target . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
    }
    else
    {
        $fileSystem->copy($item, $target . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
    }
}

Note: you can use this component as well as all other Symfony2 components standalone.

注意：您可以独立使用此组件以及所有其他 Symfony2 组件。

回答by Armin

This function copies folder recursivley very solid. I've copied it from the comments section on copy command of php.net

这个函数复制文件夹recursivley 非常可靠。我已经从php.net 复制命令的评论部分复制了它

function recurse_copy($src,$dst) { 
    $dir = opendir($src); 
    @mkdir($dst); 
    while(false !== ( $file = readdir($dir)) ) { 
        if (( $file != '.' ) && ( $file != '..' )) { 
            if ( is_dir($src . '/' . $file) ) { 
                recurse_copy($src . '/' . $file,$dst . '/' . $file); 
            } 
            else { 
                copy($src . '/' . $file,$dst . '/' . $file); 
            } 
        } 
    } 
    closedir($dir); 
}

回答by exiang

function recurse_copy($source, $dest)
{
    // Check for symlinks
    if (is_link($source)) {
        return symlink(readlink($source), $dest);
    }

    // Simple copy for a file
    if (is_file($source)) {
        return copy($source, $dest);
    }

    // Make destination directory
    if (!is_dir($dest)) {
        mkdir($dest);
    }

    // Loop through the folder
    $dir = dir($source);
    while (false !== $entry = $dir->read()) {
        // Skip pointers
        if ($entry == '.' || $entry == '..') {
            continue;
        }

        // Deep copy directories
        recurse_copy("$source/$entry", "$dest/$entry");
    }

    // Clean up
    $dir->close();
    return true;
}

回答by tropicalm

OzzyCheck's is elegant and original, but he forgot the initial mkdir($dest); See below. No copy command is ever provided with contents only. It must fulfill its entire role.

OzzyCheck 的优雅和原创，但他忘记了最初的 mkdir($dest); 见下文。没有复制命令只提供内容。它必须履行其全部职责。

$source = "dir/dir/dir";
$dest= "dest/dir";

mkdir($dest, 0755);
foreach (
  $iterator = new RecursiveIteratorIterator(
  new RecursiveDirectoryIterator($source, RecursiveDirectoryIterator::SKIP_DOTS),
  RecursiveIteratorIterator::SELF_FIRST) as $item) {
  if ($item->isDir()) {
    mkdir($dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
  } else {
    copy($item, $dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
  }
}

回答by dazzafact

Here's a simple recursive function to copy entire directories

这是一个简单的递归函数来复制整个目录

source: http://php.net/manual/de/function.copy.php

来源：http: //php.net/manual/de/function.copy.php

<?php 
function recurse_copy($src,$dst) { 
    $dir = opendir($src); 
    @mkdir($dst); 
    while(false !== ( $file = readdir($dir)) ) { 
        if (( $file != '.' ) && ( $file != '..' )) { 
            if ( is_dir($src . '/' . $file) ) { 
                recurse_copy($src . '/' . $file,$dst . '/' . $file); 
            } 
            else { 
                copy($src . '/' . $file,$dst . '/' . $file); 
            } 
        } 
    } 
    closedir($dir); 
} 
?>

回答by William

Why not just ask the OS to take care of this?

为什么不让操作系统来处理这个问题？

system("cp -r olddir newdir");

Done.

完毕。