Reading a text file from directory - php

Question

I'm beginner in html and php. I trying to create a script that will open the directory, display all text files, open each of them for editing and save the changes to a file (all the script operation will be transferred to the html form). Unfortunately, after opening the directory and viewing the files, I have trouble reading their contents. Could someone tell me what I doing wrong ?
Thank for help
<?php
$path = "books/";
$books = opendir($path);
while (($book = readdir($books)) !== false)
{
echo $book;
foreach (glob("*.txt") as $readfile)
{
$readFile = fopen($book, "r") or die("Permission error");
echo fread($readFile, filesize($book));
fclose($readFile);
}
}
closedir();
?>
Server response:
...Atlas_chmur.txtDiuna.txt
I used the loop so that only .txt files were opened. Currently I have this:
<?php
$path = "books/";
$books = opendir($path);
while (($book = readdir($books)) !== false)
{
echo $book;
$readFile = fopen($book, "r") or die("Permission error");
echo fread($readFile, filesize($book));
fclose($readFile);
}
closedir();
?>
Now I'm getting an error when trying to read the files.
Server response:
. Warning: fopen (.): Failed to open stream: Permission denied in C: \ xampp \ htdocs \ BooksEditorForm \ index.php on line 9 Permission error

Answer 1

Try this code
$path = "blog/";
$books = opendir($path);
while (($book = readdir($books)) !== false)
{
if( substr($book, -4) === ".txt" )
{
$filePath = $path.$book;
$readFile = fopen($filePath, "r") or die("Permission error");
echo fread($readFile, filesize($filePath));
fclose($readFile);
}
}
closedir();
Let me explain it...
First, occasions where you need loop inside a loop are quite rare so if your code has them, analyze it because there's a big possibility that problem can be solved differently and more efficient.
Code: value of $book is string that contains filename so simple use of substr() function to check last 4 characters will tell us is it of "*.txt" format.
Other thing that is changed is filepath; $book contains it's name but your script is looking for a file from its own perspective so file path should be containing folder + filename.
And there's no need for closing PHP tags at the end unless you have something else following it that is not PHP (like HTML).

Answer 2

I have used the below code. It's working well.try this code
$files = scandir('books/');
if(count($files) > 0) {
foreach ($files as $key => $value) {
echo '<pre>'; print_r($value); echo '</pre>';
// to read files data
$readFileVar = fopen ($value, "r");
while ($filedata = fgets($readFileVar)) {
print_r($filedata);
}
}
}