php move folders and files

/**
* @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), '/');//In order to be compatible on Linux, we convert all / symbols into / because both symbols under windows are acceptable.
$files = scandir($ from);//List the files and folders in the source file directory and store them in $files in the form of an array. The 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 2 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 $file to see if there are 2 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, $subTo); //Recursively execute the new directory.
}else{//If it is not a directory, copy the file directly. Delete the file after copying.
copy($subFrom, $subTo);
unlink($subFrom);//Delete all files
}
@rmdir($ subFrom);//Delete all directories
}
return true;
}
moveDir('C:/Users/Administrator/Desktop/0704′,'e:');//Pass the file you want to move here or Directory address