Source:  https://stackoverflow.com/questions/6863948/how-to-get-expiry-date-from-the-ssl-certificate-file-in-php<pre>Array
(
    [name] => /CN=lunawebs.com
    [subject] => Array
        (
            [CN] => lunawebs.com
        )

    [hash] => 105ebe35
    [issuer] => Array
        (
            [C] => US
            [O] => Let's Encrypt
            [CN] => R13
        )

    [version] => 2
    [serialNumber] => 596761270407088385428498947568657592403876
    [serialNumberHex] => 06D9B9480862D3F59F95AEB423CEE91EC7A4
    [validFrom] => 250930051554Z
    [validTo] => 251229051553Z
    [validFrom_time_t] => 1759209354
    [validTo_time_t] => 1766985353
    [signatureTypeSN] => RSA-SHA256
    [signatureTypeLN] => sha256WithRSAEncryption
    [signatureTypeNID] => 668
    [purposes] => Array
        (
            [1] => Array
                (
                    [0] => 1
                    [1] => 
                    [2] => sslclient
                )

            [2] => Array
                (
                    [0] => 1
                    [1] => 
                    [2] => sslserver
                )

            [3] => Array
                (
                    [0] => 1
                    [1] => 
                    [2] => nssslserver
                )

            [4] => Array
                (
                    [0] => 
                    [1] => 
                    [2] => smimesign
                )

            [5] => Array
                (
                    [0] => 
                    [1] => 
                    [2] => smimeencrypt
                )

            [6] => Array
                (
                    [0] => 
                    [1] => 
                    [2] => crlsign
                )

            [7] => Array
                (
                    [0] => 1
                    [1] => 1
                    [2] => any
                )

            [8] => Array
                (
                    [0] => 1
                    [1] => 
                    [2] => ocsphelper
                )

            [9] => Array
                (
                    [0] => 
                    [1] => 
                    [2] => timestampsign
                )

        )

    [extensions] => Array
        (
            [keyUsage] => Digital Signature, Key Encipherment
            [extendedKeyUsage] => TLS Web Server Authentication, TLS Web Client Authentication
            [basicConstraints] => CA:FALSE
            [subjectKeyIdentifier] => B7:35:5F:06:46:2D:B3:02:CD:B1:7F:96:2A:3F:AE:28:6E:4B:91:DE
            [authorityKeyIdentifier] => keyid:E7:AB:9F:0F:2C:33:A0:53:D3:5E:4F:78:C8:B2:84:0E:3B:D6:92:33

            [authorityInfoAccess] => CA Issuers - URI:http://r13.i.lencr.org/

            [subjectAltName] => DNS:lunawebs.com, DNS:lunawebs.lunasoft.com, DNS:www.lunawebs.com
            [certificatePolicies] => Policy: 2.23.140.1.2.1

            [crlDistributionPoints] => 
Full Name:
  URI:http://r13.c.lencr.org/37.crl

            [ct_precert_scts] => Signed Certificate Timestamp:
    Version   : v1(0)
    Log ID    : ED:3C:4B:D6:E8:06:C2:A4:A2:00:57:DB:CB:24:E2:38:
                01:DF:51:2F:ED:C4:86:C5:70:0F:20:DD:B7:3E:3F:E0
    Timestamp : Sep 30 06:14:24.290 2025 GMT
    Extensions: none
    Signature : ecdsa-with-SHA256
                30:45:02:20:1F:17:E1:F4:0D:41:F3:11:83:F3:89:E6:
                39:19:37:94:74:73:E2:25:67:50:F3:7D:A6:4D:0E:C4:
                14:4A:D6:AA:02:21:00:BD:63:D6:CD:2F:14:4A:BB:A3:
                71:22:88:45:5A:9C:00:2F:06:84:5A:B4:E0:3E:6A:6E:
                DA:BC:D5:43:4E:3C:35
Signed Certificate Timestamp:
    Version   : v1(0)
    Log ID    : 12:F1:4E:34:BD:53:72:4C:84:06:19:C3:8F:3F:7A:13:
                F8:E7:B5:62:87:88:9C:6D:30:05:84:EB:E5:86:26:3A
    Timestamp : Sep 30 06:14:24.295 2025 GMT
    Extensions: none
    Signature : ecdsa-with-SHA256
                30:44:02:20:66:FA:11:A5:9D:27:E7:F7:5C:2D:5A:F6:
                38:5B:15:8A:59:95:8A:B7:EE:01:33:E2:DC:55:77:49:
                DB:5E:27:A0:02:20:75:13:6D:E4:3A:BF:AB:CF:A3:F7:
                19:AC:5A:87:94:25:DC:FE:DB:45:86:A5:3A:D5:15:85:
                B5:C0:8F:F7:3D:16
        )

)
</pre>Valid From: Mon, 29 Sep 2025 23:15:54 -0600<br>Valid To:Sun, 28 Dec 2025 22:15:53 -0700<br>certificate is live