OpenSSL Functions
PHP Manual

openssl_x509_parse

Parse an X509 certificate and return the information as an array

Description

array openssl_x509_parse ( mixed $x509cert [, bool $shortnames = true ] )

openssl_x509_parse returns information about the supplied x509cert, including fields such as subject name, issuer name, purposes, valid from and valid to dates etc.

Parameters

x509cert

shortnames

shortnames controls how the data is indexed in the array - if shortnames is TRUE (the default) then fields will be indexed with the short name form, otherwise, the long name form will be used - e.g.: CN is the shortname form of commonName.

Return Values

The structure of the returned data is (deliberately) not yet documented, as it is still subject to change.