如何在PHP中从SSL证书文件中获取过期日期 - How to get Expiry date from the SSL Certificate file in PHP

How to get Expiry date from the SSL Certificate file in PHP

我想从SSL证书文件中获得到期日期。有一个网页在PHP，我已经创建，其中用户可以上传他的SSL证书文件，我将不得不使用PHP获得该文件的到期日期。

下面的代码应该有所帮助:

    $url = "https://www.google.com";
    $orignal_parse = parse_url($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']);
    echo '<pre>';
    print_r($certinfo);
    echo '</pre>';

有效期应在$certinfo['validTo']字段下。

这对我有用:

$url = "https://www.google.com";
$orignal_parse = parse_url($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']);
echo '<pre>';
print_r($certinfo);
echo '</pre>';

此字段的SSL过期时间

[validTo_time_t] => 1523164135 // expire time.

转换日期&时间

$valid_from = date(DATE_RFC2822,$certinfo['validFrom_time_t']);
$valid_to = date(DATE_RFC2822,$certinfo['validTo_time_t']);
echo "Valid From: ".$valid_from."<br>";
echo "Valid To:".$valid_to."<br>";

结果:

生效日期:星期一，2017年10月9日07:00:00 +0700有效日期:星期三，2018年10月10日06:59:59 +0700

$certpath = "your_certificate.cer";
$certinfo = openssl_x509_parse(file_get_contents($certpath));
if( $certinfo['validFrom_time_t'] > time() || $certinfo['validTo_time_t'] < time() )
    print "Certificate is expired.";