How to generate google access token using cronjob? - php

Question

I have Generated Access token using this script
Here's code
$OAuth = array(
'oauth_uri' => 'https://accounts.google.com/o/oauth2/auth',
'client_id' => '',
'client_secret' => '',
'access_type' => 'online',
'redirect_uri' => '', uri()
'oauth_token_uri' => 'https://accounts.google.com/o/oauth2/token'
);
$token = array(
'access_token' => '',
'token_type' => '',
'expires_in' => '',
'refresh_token' => ''
);
$title = 'No Code';
$AuthCode = 'Null';
$error = _get_url_param($_SERVER['REQUEST_URI'], 'error');
if ($error != NULL)
{ $title = $error;
}
else
{
$AuthCode = _get_url_param($_SERVER['REQUEST_URI'], 'code');
if ($AuthCode == NULL)
{
$OAuth_request = _formatOAuthReq($OAuth, "https://www.googleapis.com/auth/indexing");
header('Location: ' . $OAuth_request);
exit;
}
else
{
$title = 'Got Authorization Code';
$token_response = _get_auth_token($OAuth, $AuthCode);
$json_obj = json_decode($token_response);
$token['access_token'] = $json_obj->access_token;
$token['token_type'] = $json_obj->token_type;
$token['expires_in'] = $json_obj->expires_in;
$token['refresh_token'] = $json_obj->refresh_token;
echo 'access_token = ' . $json_obj->access_token;
}
}
function _get_auth_token($params, $code)
{
$url = $params['oauth_token_uri'];
$fields = array(
'code' => $code,
'client_id' => $params['client_id'],
'client_secret' => $params['client_secret'],
'redirect_uri' => $params['redirect_uri'],
'grant_type' => 'authorization_code'
);
$response = _do_post($url, $fields);
return $response;
}
function _formatOAuthReq($OAuthParams, $scope)
{
$uri = $OAuthParams['oauth_uri'];
$uri .= "?client_id=" . $OAuthParams['client_id'];
$uri .= "&redirect_uri=" . $OAuthParams['redirect_uri'];
$uri .= "&scope=" . $scope;
$uri .= "&response_type=code";
$uri .= "&access_type=offline";
return $uri;
}
When I run the script in Chrome Browser it works.
But when I set a cronjob but it's not working, and no token is generated
How to generate google access token using cronjob?
I hope you people understand it and can help me :).