he php- $_SERVER['REMOTE_ADDR'] truncating the output - php

Question

I am using the following code to get user's IP and get it sent to my email address (I'm using a third party email API):
<?php
$ip1 = $_SERVER['REMOTE_ADDR'];
$ip2 = $_SERVER['HTTP_X_FORWARDED_FOR']
$ip3 = $_SERVER['HTTP_FORWARDED'];
$ua = $_SERVER['HTTP_USER_AGENT'];
$to = 'abc#xyz.com';
$sub = 'test';
$msg = "$ip1, $ip2 and $ip3 on $ua \n ...other texts...";
$post = "key=blah&to=$to&sub=$sub&msg=$msg";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://example.com');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURL_POSTFIELDS, $post);
curl_setopt($ch, CURL_RETURNTRANSFER, 1);
$mailres = curl_exec ($ch);
?>
The API just retrieves the $_POST data and uses mail() to send email.
But when I execute the code I get the mail with the user's IP stored in $ip1 only. For eg, if user's IP is 1.1.1.1 then I get only:
1.1.1.1,
No user agent and other texts are sent.What could be the problem?

Answer 1

try this way first, just to be sure that you debug something real:
$text = '';
if (isset($_SERVER['REMOTE_ADDR'])) {
$text .= $_SERVER['REMOTE_ADDR'].', ';
} else {
$text .= 'NO _SERVER[\'REMOTE_ADDR\'] HERE, ';
}
if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$text .= $_SERVER['HTTP_X_FORWARDED_FOR'].', ';
} else {
$text .= 'NO _SERVER[\'HTTP_X_FORWARDED_FOR\'] HERE, ';
}
if (isset($_SERVER['HTTP_FORWARDED'])) {
$text .= $_SERVER['HTTP_FORWARDED'].', ';
} else {
$text .= 'NO _SERVER[\'HTTP_FORWARDED\'] HERE, ';
}
if (isset($_SERVER['HTTP_USER_AGENT'])) {
$text .= ' on '.$_SERVER['HTTP_USER_AGENT'].', ';
} else {
$text .= 'NO _SERVER[\'HTTP_USER_AGENT\'] HERE, ';
}
$text .= "\n ...other texts...";
mail ($to, $sub, $text );
but with curl it should be:
$post = array("key"=>'blah',
'to'=>$to,
'sub'=>$sub,
'msg'=>$msg);
and
curl_setopt($ch, CURL_POSTFIELDS, json_encode($post));