From 1ddbe9cbd701b2f50259ad0f82fd61b1dfaa1604 Mon Sep 17 00:00:00 2001
From: divinity76 <divinity76@gmail.com>
Date: Mon, 15 May 2023 00:16:49 +0200
Subject: [PATCH] reduce feof() calls

micro-optimization: when doing large file copies, this will reduce the number of feof() calls. for example, if copying 100MB, this will save approximately 25,599 feof() calls (255 feof() calls for every MB) - also feofs() may do an actual syscall, and syscalls are relatively expensive/time-consuming.
---
 tinyfilemanager.php | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tinyfilemanager.php b/tinyfilemanager.php
index 67ccd50..1abc12f 100644
--- a/tinyfilemanager.php
+++ b/tinyfilemanager.php
@@ -971,7 +971,15 @@ if (!empty($_FILES) && !FM_READONLY) {
                     if ($in) {
                         if (PHP_VERSION_ID < 80009) {
                             // workaround https://bugs.php.net/bug.php?id=81145
-                            while (!feof($in)) { fwrite($out, fread($in, 4096)); }
+                            do {
+                                for (;;) {
+                                    $buff = fread($in, 4096);
+                                    if ($buff === false || $buff === '') {
+                                        break;
+                                    }
+                                    fwrite($out, $buff);
+                                }
+                            } while (!feof($in));
                         } else {
                             stream_copy_to_stream($in, $out);
                         }