试图从日期对象获取年/月/日，但它返回1970-01-01

Question

I'm trying to do an script that returns the year, month and day but the response is always the same : 1970-01-01.

I can't understand, it should change on every link and "google" ssl expiration date is not 1970-01-01

So, someone can see the error in the code?

$url           = "https://www.google.es/";
$orignal_parse = parse_url($url, PHP_URL_HOST);
$get           = stream_context_create(array(
    "ssl" => array(
        "capture_peer_cert" => TRUE
    )
));
$read     = stream_socket_client("ssl://" . $orignal_parse . ":443", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $get);
$cert     = stream_context_get_params($read);
$certinfo = openssl_x509_parse($cert['options']['ssl']['peer_certificate']);
$valid_to = date(DATE_RFC2822, $certinfo['validTo_time_t']);
$time     = strtotime($valid_to);
$month    = date("F",$time);
$year     = date('Y', $time);
$day      = date('j', $time);

if ($month = "Januay") {
    $month = "01";
} else if ($month = "February") {
    $month = "02";
} else if ($month = "March") {
    $month = "03";
} else if ($month = "April") {
    $month = "04";
} else if ($month = "May") {
    $month = "05";
} else if ($month = "June") {
    $month = "06";
} else if ($month = "July") {
    $month = "07";
} else if ($month = "August") {
    $month = "08";
} else if ($month = "September") {
    $month = "09";
} else if ($month = "October") {
    $month = "10";
} else if ($month = "November") {
    $month = "11";
} else if ($month = "December") {
    $month = "12";
}
$strtime = strtotime($day ."/" . $month . "/" . $year);
$newdate = date('Y-m-d',$strtime);
echo $newdate;

Answer 1

The strtotime function uses the character between the parts of the date to determine whether it is in American format or European format. Your call is using slashes so strtotime is looking for month/day/year but you are passing day/month/year. Try changing

$strtime = strtotime($day ."/" . $month . "/" . $year);

to

$strtime = strtotime($month ."/" . $day . "/" . $year);