How to get Toky call data records

function getCDRsByDate($dateIni, $dateEnd)
{
    //example with two dates filter
    // create a new cURL resource
    $ch = curl_init();
    $api_key = '[[TOKY_API_KEY]]';
    $pageRows =[[PAGESIZE]]; //The maximum limit of CDR rows that will come from the request. Max value 500.
    $headers = array();
    $headers[] = "X-Toky-Key: {$api_key}";
	$CDRData[]="";
    //filter format (created_at >= 2017-06-01) AND (created_at <= 2017-06-02)
    $filter_enc = urlencode("(created_at >= $dateIni) AND (created_at <= $dateEnd)");
    // set URL and other appropriate options&
    curl_setopt($ch, CURLOPT_URL, "https://api.toky.co/v1/cdrs?limit=$pageRows&filter=$filter_enc");
    echo "https://api.toky.co/v1/cdrs?limit=$pageRows&filter=$filter_enc";
    curl_setopt( $ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true);
    $curl_response = curl_exec($ch); // Send request
    curl_close($ch); // close cURL resource 
    $result = json_decode($curl_response,true);
    if(sizeOf($result["results"])>0){
        $CDRData = array_merge($CDRData,$result["results"]);
    }
    while (!is_null ($result["next"])){ //If"next" is null is because you are in the last page of data
        sleep(2); // A small pause after the next request
        $ch = curl_init();		
        //Use the returned "next" field to get the next CDRs data page. This returns a link and you just have to execute the request.
        // set URL and other appropriate options&
        curl_setopt($ch, CURLOPT_URL, $result["next"]);
        curl_setopt( $ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true);
        $curl_response = curl_exec($ch); // Send request
        curl_close($ch); // close cURL resource 
        $result = json_decode($curl_response,true);
        // Check results and add the returned data to the main array
        if(sizeOf($result["results"])>0){
            $CDRData = array_merge($CDRData,$result["results"]);
        }
    }
    return $CDRData;
}

$CDRData= getCDRsByDate("[[DATE1]]","[[DATE2]]");
print "CDRs as Array:"; var_export($CDRData);