获取API返回值

//$return=getApiResult($url);
//    if ($return==200){
//        //.....
//    }
function getApiResult($url){
    if(function_exists('file_get_contents')){
        $file_contents = file_get_contents($url);
    }
    else{
        $ch = curl_init();
        $timeout = 5;
        curl_setopt ($ch, CURLOPT_URL, $url);
        curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
        $file_contents = curl_exec($ch);
        curl_close($ch);

    }
    return $file_contents;
}