Description:
------------
On a completely blank Ubuntu 16.04 server:

apt install php7.0 php7.0-dev php-pear
pecl install oauth-2.0.2
echo "extension=oauth.so" > /etc/php/7.0/cli/conf.d/20-oauth.ini

Paste the following in to a file named test.php:

```
<?php

$o = new OAuth("foo", "bar", OAUTH_SIG_METHOD_HMACSHA1, OAUTH_AUTH_TYPE_AUTHORIZATION);
try {
	$o->fetch("http://example.com/", null, OAUTH_HTTP_METHOD_GET);
} catch (Exception $e){}

$fullInfo = $o->getLastResponseInfo();

foreach(array_keys($fullInfo) as $key) {
	echo str_pad($key, 30);
	$split = str_split($key);
	foreach ($split as $chr) {
		echo str_pad(ord($chr), 4);
	}
	echo PHP_EOL;
}

$testString = "test";
echo str_pad($testString, 30);
$split = str_split($testString);
foreach ($split as $chr) {
	echo str_pad(ord($chr), 4);
}
echo PHP_EOL;
```

php test.php

```
http_code                    104 116 116 112 95  99  111 100 101 0   
content_type                 99  111 110 116 101 110 116 95  116 121 112 101 0   
url                          117 114 108 0   
header_size                  104 101 97  100 101 114 95  115 105 122 101 0   
request_size                 114 101 113 117 101 115 116 95  115 105 122 101 0   
filetime                     102 105 108 101 116 105 109 101 0   
ssl_verify_result            115 115 108 95  118 101 114 105 102 121 95  114 101 115 117 108 116 0   
redirect_count               114 101 100 105 114 101 99  116 95  99  111 117 110 116 0   
total_time                   116 111 116 97  108 95  116 105 109 101 0   
namelookup_time              110 97  109 101 108 111 111 107 117 112 95  116 105 109 101 0   
connect_time                 99  111 110 110 101 99  116 95  116 105 109 101 0   
pretransfer_time             112 114 101 116 114 97  110 115 102 101 114 95  116 105 109 101 0   
size_upload                  115 105 122 101 95  117 112 108 111 97  100 0   
size_download                115 105 122 101 95  100 111 119 110 108 111 97  100 0   
speed_download               115 112 101 101 100 95  100 111 119 110 108 111 97  100 0   
speed_upload                 115 112 101 101 100 95  117 112 108 111 97  100 0   
download_content_length      100 111 119 110 108 111 97  100 95  99  111 110 116 101 110 116 95  108 101 110 103 116 104 0   
upload_content_length        117 112 108 111 97  100 95  99  111 110 116 101 110 116 95  108 101 110 103 116 104 0   
starttransfer_time           115 116 97  114 116 116 114 97  110 115 102 101 114 95  116 105 109 101 0   
redirect_time                114 101 100 105 114 101 99  116 95  116 105 109 101 0   
headers_recv                 104 101 97  100 101 114 115 95  114 101 99  118 0   
test                          116 101 115 116
```

Note the 0/NULL character at the end of every row except the manually added "test" row. You can also see that the NULL byte messed with the string padding since it's invisible.