CURL php Auth get data LinkedIn

CURLphpLinkedIn.php

<?php
function post_curl($url,$param="")
{
    $ch = curl_init();
    curl_setopt($ch,CURLOPT_URL,$url);
    if($param!="")
        curl_setopt($ch,CURLOPT_POSTFIELDS,$param);
        
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    $result = curl_exec($ch);
    curl_close($ch);
    
    return $result;
}

$url    = 'https://www.linkedin.com/uas/oauth2/accessToken';
 


    $url    = 'https://www.linkedin.com/uas/oauth2/accessToken';
    $param  = 'grant_type=authorization_code&code='.$_GET['code'].'&redirect_uri='.$config['callback_url'].'&client_id='.$config['Client_ID'].'&client_secret='.$config['Client_Secret'];
    $return = (json_decode(post_curl($url,$param),true));


    //    $param  = 'grant_type=authorization_code&code='.$_GET['code'].'&redirect_uri='.$config['callback_url'].'&client_id='.$config['Client_ID'].'&client_secret='.$config['Client_Secret'];

print_r(post_curl());

 //  https://www.linkedin.com/uas/oauth2/authorization?response_type=code&client_id=815ynd63qiyx&redirect_uri=http://dev.localhost/&state=98765EeFWf45A53sdfKef4233&scope=r_basicprofile r_emailaddress


?>