PHP mobile folder and file program code_PHP tutorial-PHP Tutorial-php.cn

PHP mobile folder and file program code_PHP tutorial

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Release： 2016-07-13 10:44:10

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We use copy to move and copy files in PHP. Let’s look at a simple example below, which realizes the movement of directories and directory files. I hope this article will be helpful to everyone.

Method 1, copy+unlink method

My idea is: move = new + delete. Before moving, create a new folder in the target directory, then copy the files and directories there, and finally delete them.

The code is as follows

Copy code

代码如下

复制代码

/**
* @parammoveDir 剪切文件和目录
* @param string $to 目标文件路径
* @param string $from 源文件路径
*/
function moveDir($from,$to){
if(!is_dir($from)){//判断$from源文件目录是不是存在
return false;
}

$from = rtrim(str_replace(‘//’,'/’,$from), ‘/’);//为了在linux上兼容，我们把/符号全部转换成/因为windows下面2个符号都可以的.
$files = scandir($from);//列出源文件目录的文件和文件夹，并且以数组的形式存入 $files。

$files的输出结果：

Array ( [0] => . [1] => .. [2] => a [3] => b [4] => c [5] => dir [6] => dir.php [7] => dir2 [8] => dir2.php [9] => function_file.php [10] => homework.php )
可以看到scandir这个函数会输出2个多余的值： [0] => . [1] => ..在这对我们木有用.写一个if干掉他们。
*/
foreach($files as $file){//对 $files数组进行遍历,方便对数组里面的文件夹和文件进行复制和删除.
if(in_array($file, array(‘.’,’..’))){// array(‘.’,’..’）新建了一个只有.和..的数组，并且查找$file里面知否有.和..这2个值
continue;
}
$subFrom = $from.’/’.$file;//把遍历后的文件夹或者文件名变成一个新的路径
$subTo = $to.’/’.$file;

if(is_dir($subFrom)){
   @mkdir($subTo);//判断$subFrom是不是一个目录，如果是目录就在目标的目录下面，新建一个目录
   moveDir($subFrom, $subTo);//递归执行新建目录。
}else{//不是目录的话，就直接复制文件.复制完就删除文件.
   copy($subFrom, $subTo);
   unlink($subFrom);//删除所有文件
}
@rmdir($subFrom);//删除所有的目录
}
return true;
}
moveDir(‘C:/Users/Administrator/Desktop/0704′,’e:’);//在这传递你要移动的文件或者目录的地址

/**
* @parammoveDir Cut files and directories
* @param string $to target file path
* @param string $from source file path
*/
function moveDir($from,$to){
if(!is_dir($from)){//Determine whether the $from source file directory exists
return false;
}

$from = rtrim(str_replace('//','/',$from), '/');//For compatibility on Linux, we convert all / symbols into / because there are two symbols under windows All is OK.
$files = scandir($from);//List the files and folders in the source file directory and store them in $files in the form of an array.

Output of $files:

Array ( [0] => . [1] => .. [2] => a [3] => b [4] => c [5] => dir [6 ] => dir.php [7] => dir2 [8] => dir2.php [9] => function_file.php [10] => homework.php )
You can see that the scandir function will output two redundant values: [0] => . [1] => .. It is not useful to us here. Write an if to kill them.
*/
foreach($files as $file){//Traverse the $files array to facilitate copying and deleting folders and files in the array.
if(in_array($file, array('.','..'))){// array('.','..') creates a new array with only . and .., and searches in $file Do you know if there are two values of . and .
continue;
}
$subFrom = $from.’/’.$file;//Convert the traversed folder or file name into a new path
$subTo = $to.’/’.$file;

if(is_dir($subFrom)){
@mkdir($subTo);//Determine whether $subFrom is a directory. If it is a directory, create a new directory under the target directory
moveDir($subFrom, $subTo);//Recursively create a new directory.
}else{//If it is not a directory, copy the file directly. Delete the file after copying.
copy($subFrom, $subTo);
unlink($subFrom);//Delete all files
}
@rmdir($subFrom);//Delete all directories
}
return true;
}
moveDir(‘C:/Users/Administrator/Desktop/0704′,’e:’);//Pass the address of the file or directory you want to move here

代码如下	复制代码
rename("D:/testdir/test","F:/totestdir/mydir"); ?>

Method 2, rename 1. For files, rename can move between different drive letters. 2. For empty folders, rename can also move between different drive letters. However, the parent directory of the target folder must exist. 3. For non-empty folders, they can only be moved under the same drive letter. However, 1 and 3 should be able to handle almost all application situations.

The code is as follows	Copy code
rename("D:/testdir/test","F:/totestdir/mydir"); ?>

For a 40M file, the copy+unlink method takes 7.6249899864197 seconds, while the rename method only takes 0.024738788604736, which is 300 times faster.

Example

The code is as follows

代码如下

复制代码

//定义一个变量,保存文件名
$file = "html/cache.txt";
$rename = "html/renameCache.txt";
//使用rename()函数重命名一个文件
if(rename($file,$rename)==TRUE){
echo "重命名文件成功!";
}else{
echo "重命名文件失败!";
}
//使用rename()函数移动文件,并改名
rename("html/renameCache.txt","html/a/2.txt");
//使用rename()函数重命名目录
rename("html","cache");
//使用rename()函数移动目录到目标目录
rename("b","cache/b");
?>

Copy code

//Define a variable to save the file name
$file = "html/cache.txt";
$rename = "html/renameCache.txt";
//Use the rename() function to rename a file
if(rename($file,$rename)==TRUE){
echo "Renamed file successfully!";
}else{
echo "Failed to rename file!";
}
//Use the rename() function to move the file and rename it
rename("html/renameCache.txt","html/a/2.txt");
//Use the rename() function to rename the directory
rename("html","cache");
//Use the rename() function to move the directory to the target directory
rename("b","cache/b");
?>

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TechArticle

We use copy to move and copy files in php. Let’s take a look at a simple example that implements directories and directory files. Mobile, I hope this article is helpful to everyone. Method one, copy+unl...