Request token retrieval failed:

RESPONSE:

Array
(
    [linkedin] => Array
        (
            [


__400:_Content_Length_Required
__ "content-type" content="text/html; charset=UTF-8">
  








  
Content Length Required

  
Could not process this request because Content-Length was not specified. Please double-check the URL (address) you used, or contact us if you feel you have reached this page in error.

  
Click the 
            [#8220;Back] => 
            [#8221;_button_on_your_browser_or_ "//www.linkedin.com/home">go to the home page.


  


  
Are you looking for any of these LinkedIn features?

  

  

  

  

            [nbsp;







] => 
        )

    [info] => Array
        (
            [url] => https://api.linkedin.com/uas/oauth/requestToken
            [content_type] => text/html
            [http_code] => 411
            [header_size] => 457
            [request_size] => 540
            [filetime] => -1
            [ssl_verify_result] => 0
            [redirect_count] => 0
            [total_time] => 0.209189
            [namelookup_time] => 0.028722
            [connect_time] => 0.045749
            [pretransfer_time] => 0.178153
            [size_upload] => 0
            [size_download] => 5569
            [speed_download] => 26621
            [speed_upload] => 0
            [download_content_length] => 5569
            [upload_content_length] => 0
            [starttransfer_time] => 0.209099
            [redirect_time] => 0
            [certinfo] => Array
                (
                )

            [primary_ip] => 108.174.10.22
            [primary_port] => 443
            [local_ip] => 10.5.0.3
            [local_port] => 53416
            [redirect_url] => 
        )

    [oauth] => Array
        (
            [header] => Authorization: OAuth realm="http%3A%2F%2Fapi.linkedin.com",oauth_version="1.0",oauth_nonce="fa1a0abcab2ebeb8d55808b83085514a",oauth_timestamp="1713267849",oauth_consumer_key="76f4w96j8rli",oauth_callback="http%3A%2F%2Fwww.mortgagemarketguide.com%2F__membersonly%2F__linkedin%2Flogin_mmg_linkedin.php%3FlType%3Dinitiate%26lResponse%3D1",oauth_signature_method="HMAC-SHA1",oauth_signature="3cbcOfV5uIvYSW40FhJNs9sjCKA%3D"
            [string] => POST&https%3A%2F%2Fapi.linkedin.com%2Fuas%2Foauth%2FrequestToken&oauth_callback%3Dhttp%253A%252F%252Fwww.mortgagemarketguide.com%252F__membersonly%252F__linkedin%252Flogin_mmg_linkedin.php%253FlType%253Dinitiate%2526lResponse%253D1%26oauth_consumer_key%3D76f4w96j8rli%26oauth_nonce%3Dfa1a0abcab2ebeb8d55808b83085514a%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1713267849%26oauth_version%3D1.0
        )

    [error] => OAuth callback URL was not confirmed by the LinkedIn end-point
    [success] => 
)


LINKEDIN OBJ:

LinkedIn Object
(
    [callback:protected] => http://www.mortgagemarketguide.com/__membersonly/__linkedin/login_mmg_linkedin.php?lType=initiate&lResponse=1
    [token:protected] => 
    [application_key:protected] => 76f4w96j8rli
    [application_secret:protected] => 42o78XxqZb9HSjgo
    [response_format:protected] => xml
    [last_request_headers] => Array
        (
            [0] => Authorization: OAuth realm="http%3A%2F%2Fapi.linkedin.com",oauth_version="1.0",oauth_nonce="fa1a0abcab2ebeb8d55808b83085514a",oauth_timestamp="1713267849",oauth_consumer_key="76f4w96j8rli",oauth_callback="http%3A%2F%2Fwww.mortgagemarketguide.com%2F__membersonly%2F__linkedin%2Flogin_mmg_linkedin.php%3FlType%3Dinitiate%26lResponse%3D1",oauth_signature_method="HMAC-SHA1",oauth_signature="3cbcOfV5uIvYSW40FhJNs9sjCKA%3D"
            [1] => Content-Type: text/plain; charset=UTF-8
        )

    [last_request_url] => https://api.linkedin.com/uas/oauth/requestToken
)