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] => R11
        )

    [version] => 2
    [serialNumber] => 605851900042876816977646567390466686912125
    [serialNumberHex] => 06F4704F9D9B19AB4E2962134C4026C9067D
    [validFrom] => 250602051219Z
    [validTo] => 250831051218Z
    [validFrom_time_t] => 1748841139
    [validTo_time_t] => 1756617138
    [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] => 1E:38:60:38:FC:6C:53:93:3F:D6:3A:08:AA:63:6F:4A:05:23:A9:66
            [authorityKeyIdentifier] => keyid:C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9

            [authorityInfoAccess] => CA Issuers - URI:http://r11.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://r11.c.lencr.org/126.crl

            [ct_precert_scts] => 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 : Jun  2 06:10:49.817 2025 GMT
    Extensions: none
    Signature : ecdsa-with-SHA256
                30:45:02:20:66:5C:24:9C:42:F4:56:52:85:CB:3D:A4:
                8F:FC:17:BE:20:F1:3D:7D:FA:0E:A3:73:44:0A:7D:DE:
                49:64:79:56:02:21:00:97:57:18:D6:16:4E:FA:F2:C6:
                83:04:BE:FE:B4:93:E2:24:21:00:C5:F0:02:C2:C6:85:
                17:B7:2D:6C:0A:40:28
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 : Jun  2 06:10:49.817 2025 GMT
    Extensions: none
    Signature : ecdsa-with-SHA256
                30:44:02:20:60:1F:F3:3B:02:DC:E5:78:59:9D:02:60:
                9F:03:9F:CF:84:98:0D:46:71:C8:AD:76:24:54:8F:A3:
                87:F4:86:43:02:20:5B:0C:1A:6A:A4:41:60:FD:6B:89:
                C5:27:7D:66:4F:52:9E:9F:29:C9:CF:80:C1:15:E3:55:
                C1:5A:47:B9:0E:8E
        )

)
</pre>Valid From: Sun, 01 Jun 2025 23:12:19 -0600<br>Valid To:Sat, 30 Aug 2025 23:12:18 -0600<br>certificate is live