PHP mobile folder and file program code_PHP tutorial
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 | ||||||||
* @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. 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
|
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
|
Copy code | ||||
$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");
?>
http: //www.bkjia.com/PHPjc/633122.html

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