PHP md5_file not the same on different machine

Question

I have two simple PHP scripts: testHash.php and me.php. The testHash.php is simply doing a md5_file function to the me.php and printing out the result

testHash.php contains:

<?php 
 $test = md5_file(__DIR__."/me.php"); 
 echo $test;
 echo phpinfo();
?>

and me.php contains:

<?php
echo "Hello World";
?>

I have uploaded both script to two different Webserver using an FTP Tool (FileZilla) without of course touching the files. One is a local virtual machine and the other is a public Webserver.The output of the $test variable was different from the other. Both webserver operates on LAMP framework

Local VM Webserver = 7633bbfa20ed2d29a55338913048eff0
Public Webserver = 3a65329165abe28a485bed663da5e298

Why are they different from each other? Are there external factors (framework, PHP Versions, PHP configuration files) which affects the computation of the hash. Thank You.

it depends on the upload method you are using in filezilla. if it's binary, the md5 checksum should be the same, if you used ascii the checksum can be different. — Raphael Müller, Jan 22 '15 at 08:36
yes that was the problem it was set to auto. thanks @RaphaelMüller — tangol100, Jan 22 '15 at 08:57

score 4 · Accepted Answer · answered Jan 22 '15 at 08:39

4

The md5's are different if the files are.

If you're transfering your file in ascii-mode, something in them could change, like the line endings changing from CRLF to LF.

answered Jan 22 '15 at 08:39

Αμηλωρε

116
5

Thanks so much. Il keep in mind the mode of transfer of my FTP tool. In my FileZilla->Transfer->Transfer Transfer Type was set to auto. I just set it to Binary. Thanks a lot – tangol100 Jan 22 '15 at 08:55

PHP md5_file not the same on different machine

1 Answers1