php - compare two strings

Question

I have this part of PHP code:

<?php
$dns = file_get_contents('./dns.txt');

$dns2 = 'serverquery://name:[email protected]:10011/?server_port=9987&use_offline_as_virtual=1&no_query_clients=1';

$dns3 = 'serverquery://name:pass@' . $dns . ':10011/?server_port=9987&use_offline_as_virtual=1&no_query_clients=1';

if (strcmp($dns2, $dns3) !== 0) {
    echo '$dns2 is not equal to $dns3';
}

echo '<br><br>DNS<br>';
print $dns;
echo '<br><br>DNS2<br>';
print $dns2;
echo '<br><br>DNS3<br>';
print $dns3;
echo '<br><br><br>';

?>

file dns.txt contais only text example.com without any space at the begin or at the end

when I run this code, the result is:

$dns2 is not equal to $dns3

DNS
example.com

DNS2
serverquery://name:[email protected]:10011/?server_port=9987&use_offline_as_virtual=1&no_query_clients=1

DNS3
serverquery://name:pass@example.com:10011/?server_port=9987&use_offline_as_virtual=1&no_query_clients=1

i'm trying to create serverquery for TeamSpeak 3 server and it only works if I use $dns2 and I want it to work with $dns3

so my question is: why $dns2 is not equal to $dns3 ?

can you please help me ?

Use var_dump() to verify the contents of the file and see whether it really contains what you think it does — PeeHaa
– PeeHaa, Commented Jun 14, 2014 at 17:29
you are right... but why they are not the same? DNS:(length=14) DNS2:(length=103) DNS3:(length=106) — Dvdrw
– Dvdrw, Commented Jun 14, 2014 at 17:32
Also look at the actual output and you will have your answer. — PeeHaa
– PeeHaa, Commented Jun 14, 2014 at 17:33
im trying but i cant see any diference :/ string 'serverquery://name:[email protected]:10011/?server_port=9987&use_offline_as_virtual=1&no_query_clients=1' (length=103) and string 'serverquery://name:[email protected]:10011/?server_port=9987&use_offline_as_virtual=1&no_query_clients=1' (length=106) — Dvdrw
– Dvdrw, Commented Jun 14, 2014 at 17:37
If you upload you file here and @fredirik is correct you will see three leading characters hexdump.pieterhordijk.com — PeeHaa
– PeeHaa, Commented Jun 14, 2014 at 17:39

Frederik Krautwald · Accepted Answer · 2014-06-14 17:36:02Z

1

You have some hidden characters in your dns.txt file. Make sure it is encoded UTF-8 without BOM.

The UTF-8 BOM is a sequence of bytes (EF BB BF), hence the overhead of three characters.

answered Jun 14, 2014 at 17:36

Frederik Krautwald

1,88024 silver badges33 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

php - compare two strings

1 Answer 1

Comments

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Related