How do you get the subjectAltName from a CSR in php?

Question

The php reference has functions like openssl_csr_get_subject, but how do I get the subjectAltNames from the csr?

Answer 1

I dont think that its possible, I instead went with phpseclib to do this for me.

Answer 2

Try openssl_x509_parse alternative subjects can read as extensions, I believe you will find:

[extensions][subjectAltName] => DNS:*.cacert.org, DNS:cacert.org, DNS:*.cacert.net, DNS:cacert.net, DNS:*.cacert.com, DNS:cacert.com