PHP feof($file) returns false on the empty file

Question

There is php code:

#!/usr/bin/php
<?php
if ($file = fopen("file.txt", "r")) {
        while(!feof($file)) {
                $line = fgets($file);
                echo "----" , $line , "----";
            }
        fclose($file);
}
?>

and empty file "file.txt"

[root@localhost]# ls -l  file.txt 
-rw-r--r-- 1 root root 0 Апр 21 10:14 file.txt
[root@localhost]# file file.txt 
file.txt: empty

Why i get ? feof should be true in first loop or am i wrong?

[root@localhost ]# php -f  test2.php
--------

[root@localhost ]# 

Answer 1

Yes, that is because the file is already empty but PHP doesn't know it until it executes the fgets() method.

In order to avoid PHP reads the first empty line, you have to check that fgets is not false. To achieve that should do something like:

if ($file = fopen("file.txt", "r")) {
    while (($line = fgets($file)) !== false) {
        echo "----" , $line , "----";
    }
    fclose($file);
}