openssl_pkey_export Gets an exportable representation of a key into a string boolopenssl_pkey_export mixedkey string&out stringpassphrase arrayconfigargs openssl_pkey_export exports key as a PEM encoded string and stores it into out (which is passed by reference). The key is optionally protected by passphrase. configargs can be used to fine-tune the export process by specifying and/or overriding options for the openssl configuration file. See openssl_csr_new for more information about configargs. &return.success; &reference.openssl.note-openssl-cnf;