openssl_pkey_export Gets an exportable representation of a key into a string &reftitle.description; boolopenssl_pkey_export mixedkey stringout stringpassphrase arrayconfigargs openssl_pkey_export exports key as a PEM encoded string and stores it into out (which is passed by reference). &reference.openssl.note-openssl-cnf; &reftitle.parameters; key out passphrase The key is optionally protected by passphrase. configargs 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. &reftitle.returnvalues; &return.success;