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] => R10
        )

    [version] => 2
    [serialNumber] => 537934418851618537860761076578694487954138
    [serialNumberHex] => 062CD8E089CD3A3C3AA13996B114BD1552DA
    [validFrom] => 250403051532Z
    [validTo] => 250702051531Z
    [validFrom_time_t] => 1743657332
    [validTo_time_t] => 1751433331
    [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] => 10:DA:F1:79:D7:58:DC:F0:C3:F4:9F:81:95:98:86:BC:B0:0B:49:7F
            [authorityKeyIdentifier] => keyid:BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8

            [authorityInfoAccess] => OCSP - URI:http://r10.o.lencr.org
CA Issuers - URI:http://r10.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://r10.c.lencr.org/91.crl

            [ct_precert_scts] => Signed Certificate Timestamp:
    Version   : v1(0)
    Log ID    : 0D:E1:F2:30:2B:D3:0D:C1:40:62:12:09:EA:55:2E:FC:
                47:74:7C:B1:D7:E9:30:EF:0E:42:1E:B4:7E:4E:AA:34
    Timestamp : Apr  3 06:14:02.727 2025 GMT
    Extensions: none
    Signature : ecdsa-with-SHA256
                30:45:02:21:00:D4:A6:C9:95:A0:B4:15:E4:70:BE:60:
                DE:49:01:B4:EE:38:88:7A:AA:B3:B8:94:D6:77:53:2C:
                4A:67:8B:B5:22:02:20:19:3F:18:5E:3D:07:CF:23:C5:
                B7:F3:9C:7F:92:9D:CF:F3:C4:55:E0:55:F4:90:AD:20:
                EF:17:AE:04:EE:1A:F6
Signed Certificate Timestamp:
    Version   : v1(0)
    Log ID    : A4:42:C5:06:49:60:61:54:8F:0F:D4:EA:9C:FB:7A:2D:
                26:45:4D:87:A9:7F:2F:DF:45:59:F6:27:4F:3A:84:54
    Timestamp : Apr  3 06:14:02.710 2025 GMT
    Extensions: none
    Signature : ecdsa-with-SHA256
                30:45:02:21:00:95:EA:25:FB:78:A0:CC:D2:37:D3:74:
                28:77:3D:D2:B1:71:C0:AE:9F:E7:61:33:5E:5F:82:7D:
                C7:44:51:3E:D7:02:20:44:5F:EF:15:72:AF:FE:D6:BA:
                F7:4D:0B:6E:32:06:AE:6F:17:F5:6B:5A:CB:EB:55:21:
                87:15:C1:59:DA:FA:3F
        )

)
</pre>Valid From: Wed, 02 Apr 2025 23:15:32 -0600<br>Valid To:Tue, 01 Jul 2025 23:15:31 -0600<br>certificate is live