ERR_error_string 4723 ext/openssl/openssl.c 		RETURN_STRING(ERR_error_string(val, buf), 1);
ERR_error_string  600 ext/openssl/xp_ssl.c 			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Error encoding X509 certificate: %d: %s", err_code, ERR_error_string(err_code, err_buf));