get validTo date from x509 certificate using openssl-php

Question

Need to get validTo (expiry) date from x509 certificate and validate with current date. Am using openssl_x509_parse($crtdata) to parse the certificate, any thought on how to get the validTo date from the resulting array. Thanks.

Please post the resulting array – vascowhite May 17 '13 at 21:56 — vascowhite, May 17 '13 at 21:56

doptimusprime · Answer 1 · 2013-05-19T16:35:13.043

1

Why do not you use print_r which will print the array and gives out the indices or key you need?

I think you can try the following

 $arr = openssl_x509_parse($crtdata);
 /*To get the validTo*/
 $validTo = $arr['ValidTo_time_t'];

This is given as an example at PHP manual page of openssl_x509_parse.

I hope this would help you. But you may face issue in future. Consider this program to update if you plan to update PHP version and test it well.

edited May 19 '13 at 16:35

answered May 18 '13 at 19:12

doptimusprime

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Why would they "face issue in future"? – neubert May 19 '13 at 16:18
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Because documentation says " The structure of the returned data is (deliberately) not yet documented, as it is still subject to change.". – doptimusprime May 19 '13 at 16:35

get validTo date from x509 certificate using openssl-php

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