IP Geolocation API Header request with php - php

Question

I am trying to use ip-api.com (IP Geolocation) to retrieve usage limit.
1st - I've managed to use the api with php, but they don't give the usage limit (max 45/minute) in the response format.
They say that that information is returned in the HTTP header.
2nd - So I opened chrome developer network to see if I find the variables (X-R1 and X-Ttl) or whatever they called in the HTTP header but I don't see them there.
3rd - What I've managed to do is using php function (get_headers($url)), it works fine but when ever the script is run it counts as 2 requests for the API, so the usage limits always counts as 2.
How do I find them in the 2nd step or with some php function so I don't have to make another request like i did in the 3rd?
<?php
//1st request
function getClientIp(){
if(!empty($_SERVER['HTTP_CLIENT_IP'])){
//ip from share internet
$ip = $_SERVER['HTTP_CLIENT_IP'];
}elseif(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){
//ip pass from proxy
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
}else{
$ip = $_SERVER['REMOTE_ADDR'];
}
return $ip;
}
$clientIp = getClientIp();
$query = #unserialize(file_get_contents('http://ip-api.com/php/'.$clientIp));
if ($query['status'] == 'success'){
echo $query['city'];
echo '<br>';
echo $query['query'];
};
//2nd Request
echo '<br><br>';
$url = 'http://ip-api.com/php/'.$clientIp;
//print_r(get_headers($url));
print_r(get_headers($url, 1)['X-Rl']);

Answer 1

My solution in the end was just using the array variable $http_response_header.
Like this I can get the API response + header in a single request.
<?php
function getClientIp(){
if(!empty($_SERVER['HTTP_CLIENT_IP'])){
//ip from share internet
$ip = $_SERVER['HTTP_CLIENT_IP'];
}elseif(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){
//ip pass from proxy
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
}else{
$ip = $_SERVER['REMOTE_ADDR'];
}
return $ip;
}
function parseHeaders( $headers )
{
$head = array();
foreach( $headers as $k=>$v )
{
$t = explode( ':', $v, 2 );
if( isset( $t[1] ) )
$head[ trim($t[0]) ] = trim( $t[1] );
else
{
$head[] = $v;
if( preg_match( "#HTTP/[0-9\.]+\s+([0-9]+)#",$v, $out ) )
$head['reponse_code'] = intval($out[1]);
}
}
return $head['X-Rl'];
}
//body request
$clientIp = getClientIp();
$query = #unserialize(file_get_contents('http://ip-api.com/php/'.$clientIp));
if ($query['status'] == 'success'){
echo $query['city'];
echo '<br>';
echo $query['query'];
}
//header request
echo '<br>Available requests: '.parseHeaders($http_response_header);