Creating dirs, copying file, writing content into the files - php

Question

There are some posts here, but they don't work for me. My need is described in the comments. As a poor beginner, I read many possible online manuals, but can't find the solution.
<?php
// BASIC STRUCTURE //
// ./core/
// ./core/index.gen
// ./data/
// ./data/<dir_name>
// ./data/<dir_name>/<file_name>
// ./data/<dir_name>/index.php - for <dir_name> listing
// ./data/index.php - for ./data/ listing
// BASIC OPERATION
// 1. create a subdirectory in ./data/
// 2. copy the ./core/index.gen to new created subdirectory
// 3. create new file in new created directory in ./data/
$base_dir = './data';
$dir_name = '';
$file_name = '';
$data_dir = $_GET['data_dir'];
//Check if the directory with the name already exists
if (!is_dir($base_dir.$data_dir)) {
//Create our directory if it does not exist
mkdir($base_dir.'/'.$data_dir);
$msg = 'SUCCESS';
touch($base_dir.'/'.$data_dir.'/'.$_GET['file_name'].'.html');
// copy index.gen from ./core/ to new created dir
copy($base_dir.'dir_index.php',$base_dir.'/'.$data_dir.'.index.php');
}else{
$msg = 'ERROR';
}
// read directory content
function getFiles(){
$items=array();
if($dir=opendir('.')){
while($item=readdir($dir)){
if($item!='.'
&& $item!='..'
&& $item!=basename(__FILE__)
&& $item != "index.php"
&& $item != "core"
){
$items[]=$item;
}
}
closedir($dir);
}
natsort($items); //sort
return $items;
}
?>
<!-- in HTML bobdy -->
...
<div class="msg"><?php echo $msg;?></div>
<div class="frames">
<div id="dirs" class="frame">
<div class="frame-title">Directories</div>
<!-- generated dirs-list-links targeted to #files -->
<iframe name="dirs" src="<?php echo $base_dir.'/index.php';?>"></iframe>
</div>
<div id="files" class="frame">
<div class="frame-title">Files</div>
<!-- generated files-list-links targeted to #file_preview -->
<iframe name="files" src="<?php echo $data_dir.'/index.php';?>"></iframe>
</div>
<div id="file_preview" class="frame">
<div class="frame-title">Preview</div>
<iframe name="file_preview"><file.html></iframe>
</div>
</div>
The directories and files are created correctly. But the "index" file is not copoied. Please, hint.

Answer 1

I believe you're looking for file_put_contents
read the index file you want to create into a variable
$current = file_get_contents($file);
then write the index file:
$targetIndexFile = '/newDirectory/index.html';
file_put_contents($targetIndexFile,$current;
That should allow you to effectively move a file from one directory to another.

Answer 2

You must add a slash before dir_index.php:
copy($base_dir . '/' . 'dir_index.php',$base_dir.'/'.$data_dir.'.index.php');