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/*
  +----------------------------------------------------------------------+
  | PHP Version 5                                                        |
  +----------------------------------------------------------------------+
  | Copyright (c) 2006-2013 The PHP Group                                |
  +----------------------------------------------------------------------+
  | This source file is subject to version 3.01 of the PHP license,      |
  | that is bundled with this package in the file LICENSE, and is        |
  | available through the world-wide-web at the following url:           |
  | http://www.php.net/license/3_01.txt                                  |
  | If you did not receive a copy of the PHP license and are unable to   |
  | obtain it through the world-wide-web, please send a note to          |
  | license@php.net so we can mail you a copy immediately.               |
  +----------------------------------------------------------------------+
  | Authors: Georg Richter <georg@mysql.com>                             |
  |          Andrey Hristov <andrey@mysql.com>                           |
  |          Ulf Wendel <uwendel@mysql.com>                              |
  +----------------------------------------------------------------------+
*/

/* $Id$ */

#ifndef MYSQLND_STRUCTS_H
#define MYSQLND_STRUCTS_H

#define MYSQLND_TYPEDEFED_METHODS

typedef struct st_mysqlnd_memory_pool MYSQLND_MEMORY_POOL;
typedef struct st_mysqlnd_memory_pool_chunk MYSQLND_MEMORY_POOL_CHUNK;
typedef struct st_mysqlnd_memory_pool_chunk_llist MYSQLND_MEMORY_POOL_CHUNK_LLIST;


#define MYSQLND_MEMORY_POOL_CHUNK_LIST_SIZE 100

struct st_mysqlnd_memory_pool
{
    zend_uchar *arena;
    unsigned int refcount;
    unsigned int arena_size;
    unsigned int free_size;

    MYSQLND_MEMORY_POOL_CHUNK*    (*get_chunk)(MYSQLND_MEMORY_POOL * pool, unsigned int size TSRMLS_DC);
};

struct st_mysqlnd_memory_pool_chunk
{
    size_t                app;
    MYSQLND_MEMORY_POOL    *pool;
    zend_uchar            *ptr;
    unsigned int        size;
    enum_func_status    (*resize_chunk)(MYSQLND_MEMORY_POOL_CHUNK * chunk, unsigned int size TSRMLS_DC);
    void                (*free_chunk)(MYSQLND_MEMORY_POOL_CHUNK * chunk TSRMLS_DC);
    zend_bool            from_pool;
};


typedef struct st_mysqlnd_cmd_buffer
{
    zend_uchar        *buffer;
    size_t            length;
} MYSQLND_CMD_BUFFER;


typedef struct st_mysqlnd_field
{
    const char *name;            /* Name of column */
    const char *org_name;        /* Original column name, if an alias */
    const char *table;            /* Table of column if column was a field */
    const char *org_table;        /* Org table name, if table was an alias */
    const char *db;                /* Database for table */
    const char *catalog;        /* Catalog for table */
    char *def;                    /* Default value (set by mysql_list_fields) */
    unsigned long length;        /* Width of column (create length) */
    unsigned long max_length;    /* Max width for selected set */
    unsigned int name_length;
    unsigned int org_name_length;
    unsigned int table_length;
    unsigned int org_table_length;
    unsigned int db_length;
    unsigned int catalog_length;
    unsigned int def_length;
    unsigned int flags;            /* Diverse flags */
    unsigned int decimals;        /* Number of decimals in field */
    unsigned int charsetnr;        /* Character set */
    enum mysqlnd_field_types type;    /* Type of field. See mysql_com.h for types */
    char *root;
    size_t root_len;
} MYSQLND_FIELD;


typedef struct st_mysqlnd_upsert_result
{
    unsigned int    warning_count;
    unsigned int    server_status;
    uint64_t        affected_rows;
    uint64_t        last_insert_id;
} MYSQLND_UPSERT_STATUS;


typedef struct st_mysqlnd_error_info
{
    char error[MYSQLND_ERRMSG_SIZE+1];
    char sqlstate[MYSQLND_SQLSTATE_LENGTH + 1];
    unsigned int error_no;
} MYSQLND_ERROR_INFO;


typedef struct st_mysqlnd_infile_info
{
    php_stream    *fd;
    int            error_no;
    char        error_msg[MYSQLND_ERRMSG_SIZE + 1];
    const char    *filename;
} MYSQLND_INFILE_INFO;


/* character set information */
typedef struct st_mysqlnd_charset
{
    unsigned int    nr;
    const char        *name;
    const char        *collation;
    unsigned int    char_minlen;
    unsigned int    char_maxlen;
    const char        *comment;
    unsigned int     (*mb_charlen)(unsigned int c);
    unsigned int     (*mb_valid)(const char *start, const char *end);
} MYSQLND_CHARSET;


/* local infile handler */
typedef struct st_mysqlnd_infile
{
    int        (*local_infile_init)(void **ptr, char *filename, void **userdata TSRMLS_DC);
    int        (*local_infile_read)(void *ptr, char *buf, unsigned int buf_len TSRMLS_DC);
    int        (*local_infile_error)(void *ptr, char *error_msg, unsigned int error_msg_len TSRMLS_DC);
    void    (*local_infile_end)(void *ptr TSRMLS_DC);
    zval    *callback;
    void    *userdata;
} MYSQLND_INFILE;

typedef struct st_mysqlnd_options
{
    ulong        flags;

    /* init commands - we need to send them to server directly after connect */
    unsigned int    num_commands;
    char            **init_commands;

    /* configuration file information */
    char         *cfg_file;
    char        *cfg_section;

    /*
      We need to keep these because otherwise st_mysqlnd_conn will be changed.
      The ABI will be broken and the methods structure will be somewhere else
      in the memory which can crash external code. Feel free to reuse these.
    */
    char        * unused1;
    char        * unused2;
    char        * unused3;
    char        * unused4;
    char        * unused5;

    enum_mysqlnd_protocol_type protocol;

    char         *charset_name;
    /* maximum allowed packet size for communication */
    ulong        max_allowed_packet;

    zend_bool    numeric_and_datetime_as_unicode;
#ifdef MYSQLND_STRING_TO_INT_CONVERSION
    zend_bool    int_and_float_native;
#endif
} MYSQLND_OPTIONS;

typedef struct st_mysqlnd_net_options
{
    /* timeouts */
    unsigned int timeout_connect;
    unsigned int timeout_read;
    unsigned int timeout_write;

    unsigned int net_read_buffer_size;

    /* SSL information */
    char        *ssl_key;
    char        *ssl_cert;
    char        *ssl_ca;
    char        *ssl_capath;
    char        *ssl_cipher;
    char        *ssl_passphrase;
    zend_bool    ssl_verify_peer;
    uint64_t    flags;
} MYSQLND_NET_OPTIONS;


typedef struct st_mysqlnd_connection MYSQLND;
typedef struct st_mysqlnd_net    MYSQLND_NET;
typedef struct st_mysqlnd_protocol    MYSQLND_PROTOCOL;
typedef struct st_mysqlnd_res    MYSQLND_RES;
typedef char**                     MYSQLND_ROW_C;        /* return data as array of strings */
typedef struct st_mysqlnd_stmt_data    MYSQLND_STMT_DATA;
typedef struct st_mysqlnd_stmt    MYSQLND_STMT;
typedef unsigned int            MYSQLND_FIELD_OFFSET;

typedef struct st_mysqlnd_param_bind MYSQLND_PARAM_BIND;

typedef struct st_mysqlnd_result_bind MYSQLND_RESULT_BIND;

typedef struct st_mysqlnd_result_metadata MYSQLND_RES_METADATA;
typedef struct st_mysqlnd_buffered_result MYSQLND_RES_BUFFERED;
typedef struct st_mysqlnd_unbuffered_result MYSQLND_RES_UNBUFFERED;

typedef struct st_mysqlnd_debug MYSQLND_DEBUG;


typedef MYSQLND_RES* (*mysqlnd_stmt_use_or_store_func)(MYSQLND_STMT * const TSRMLS_DC);
typedef enum_func_status  (*mysqlnd_fetch_row_func)(MYSQLND_RES *result,
                                                    void *param,
                                                    unsigned int flags,
                                                    zend_bool *fetched_anything
                                                    TSRMLS_DC);

typedef struct st_mysqlnd_stats MYSQLND_STATS;

typedef void (*mysqlnd_stat_trigger)(MYSQLND_STATS * stats, enum_mysqlnd_collected_stats stat, int64_t change TSRMLS_DC);

struct st_mysqlnd_stats
{
    uint64_t                *values;
    mysqlnd_stat_trigger    *triggers;
    size_t                    count;
    zend_bool                in_trigger;
#ifdef ZTS
    MUTEX_T    LOCK_access;
#endif
};


typedef struct st_mysqlnd_read_buffer {
    zend_uchar     * data;
    size_t         offset;
    size_t         size;
    size_t        len;
    zend_bool    (*is_empty)(struct st_mysqlnd_read_buffer *);
    void        (*read)(struct st_mysqlnd_read_buffer *, size_t count, zend_uchar * dest);
    size_t        (*bytes_left)(struct st_mysqlnd_read_buffer *);
    void        (*free_buffer)(struct st_mysqlnd_read_buffer ** TSRMLS_DC);
} MYSQLND_READ_BUFFER;



typedef enum_func_status    (*func_mysqlnd_net__connect)(MYSQLND_NET * net, const char * const scheme, size_t scheme_len, zend_bool persistent, char **errstr, int * errcode TSRMLS_DC);
typedef size_t                (*func_mysqlnd_net__send)(MYSQLND * const conn, char * const buf, size_t count TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_net__receive)(MYSQLND * conn, zend_uchar * buffer, size_t count TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_net__set_client_option)(MYSQLND_NET * const net, enum_mysqlnd_option option, const char * const value TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_net__network_read)(MYSQLND * conn, zend_uchar * buffer, size_t count TSRMLS_DC);
typedef size_t                (*func_mysqlnd_net__network_write)(MYSQLND * const conn, const zend_uchar * const buf, size_t count TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_net__decode)(zend_uchar * uncompressed_data, size_t uncompressed_data_len, const zend_uchar * const compressed_data, size_t compressed_data_len TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_net__encode)(zend_uchar * compress_buffer, size_t * compress_buffer_len, const zend_uchar * const uncompressed_data, size_t uncompressed_data_len TSRMLS_DC);
typedef size_t                (*func_mysqlnd_net__consume_uneaten_data)(MYSQLND_NET * const net, enum php_mysqlnd_server_command cmd TSRMLS_DC);
typedef void                (*func_mysqlnd_net__free_contents)(MYSQLND_NET * net TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_net__enable_ssl)(MYSQLND_NET * const net TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_net__disable_ssl)(MYSQLND_NET * const net TSRMLS_DC);


struct st_mysqlnd_net_methods
{
    func_mysqlnd_net__connect connect;
    func_mysqlnd_net__send send;
    func_mysqlnd_net__receive receive;
    func_mysqlnd_net__set_client_option set_client_option;
    func_mysqlnd_net__network_read network_read;
    func_mysqlnd_net__network_write network_write;
    func_mysqlnd_net__decode decode;
    func_mysqlnd_net__encode encode;
    func_mysqlnd_net__consume_uneaten_data consume_uneaten_data;
    func_mysqlnd_net__free_contents free_contents;
    func_mysqlnd_net__enable_ssl enable_ssl;
    func_mysqlnd_net__disable_ssl disable_ssl;

    void * unused1;
    void * unused2;
    void * unused3;
    void * unused4;
    void * unused5;
};


struct st_mysqlnd_packet_greet;
struct st_mysqlnd_packet_greet;
struct st_mysqlnd_packet_auth;
struct st_mysqlnd_packet_ok;
struct st_mysqlnd_packet_command;
struct st_mysqlnd_packet_eof;
struct st_mysqlnd_packet_rset_header;
struct st_mysqlnd_packet_res_field;
struct st_mysqlnd_packet_row;
struct st_mysqlnd_packet_stats;
struct st_mysqlnd_packet_prepare_response;
struct st_mysqlnd_packet_chg_user_resp;

typedef struct st_mysqlnd_packet_greet *        (*func_mysqlnd_protocol__get_greet_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_auth *            (*func_mysqlnd_protocol__get_auth_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_ok *            (*func_mysqlnd_protocol__get_ok_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_command *        (*func_mysqlnd_protocol__get_command_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_eof *            (*func_mysqlnd_protocol__get_eof_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_rset_header *    (*func_mysqlnd_protocol__get_rset_header_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_res_field *    (*func_mysqlnd_protocol__get_result_field_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_row *            (*func_mysqlnd_protocol__get_row_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_stats *        (*func_mysqlnd_protocol__get_stats_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_prepare_response *(*func_mysqlnd_protocol__get_prepare_response_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);
typedef struct st_mysqlnd_packet_chg_user_resp*(*func_mysqlnd_protocol__get_change_user_response_packet)(MYSQLND_PROTOCOL * const protocol, zend_bool persistent TSRMLS_DC);

struct st_mysqlnd_protocol_methods
{
    func_mysqlnd_protocol__get_greet_packet get_greet_packet;
    func_mysqlnd_protocol__get_auth_packet get_auth_packet;
    func_mysqlnd_protocol__get_ok_packet get_ok_packet;
    func_mysqlnd_protocol__get_command_packet get_command_packet;
    func_mysqlnd_protocol__get_eof_packet get_eof_packet;
    func_mysqlnd_protocol__get_rset_header_packet get_rset_header_packet;
    func_mysqlnd_protocol__get_result_field_packet get_result_field_packet;
    func_mysqlnd_protocol__get_row_packet get_row_packet;
    func_mysqlnd_protocol__get_stats_packet get_stats_packet;
    func_mysqlnd_protocol__get_prepare_response_packet get_prepare_response_packet;
    func_mysqlnd_protocol__get_change_user_response_packet get_change_user_response_packet;

    void * unused1;
    void * unused2;
    void * unused3;
    void * unused4;
    void * unused5;
};



typedef enum_func_status    (*func_mysqlnd_conn__init)(MYSQLND * conn TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__connect)(MYSQLND *conn, const char *host, const char * user, const char * passwd, unsigned int passwd_len, const char * db, unsigned int db_len, unsigned int port, const char * socket_or_pipe, unsigned int mysql_flags TSRMLS_DC);
typedef ulong                (*func_mysqlnd_conn__escape_string)(MYSQLND * const conn, char *newstr, const char *escapestr, size_t escapestr_len TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__set_charset)(MYSQLND * const conn, const char * const charset TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__query)(MYSQLND *conn, const char *query, unsigned int query_len TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__send_query)(MYSQLND *conn, const char *query, unsigned int query_len TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__reap_query)(MYSQLND *conn TSRMLS_DC);
typedef MYSQLND_RES *        (*func_mysqlnd_conn__use_result)(MYSQLND * const conn TSRMLS_DC);
typedef MYSQLND_RES *        (*func_mysqlnd_conn__store_result)(MYSQLND * const conn TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__next_result)(MYSQLND * const conn TSRMLS_DC);
typedef zend_bool            (*func_mysqlnd_conn__more_results)(const MYSQLND * const conn TSRMLS_DC);

typedef MYSQLND_STMT *        (*func_mysqlnd_conn__stmt_init)(MYSQLND * const conn TSRMLS_DC);

typedef enum_func_status    (*func_mysqlnd_conn__shutdown_server)(MYSQLND * const conn, uint8_t level TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__refresh_server)(MYSQLND * const conn, uint8_t options TSRMLS_DC);

typedef enum_func_status    (*func_mysqlnd_conn__ping)(MYSQLND * const conn TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__kill_connection)(MYSQLND *conn, unsigned int pid TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__select_db)(MYSQLND * const conn, const char * const db, unsigned int db_len TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__server_dump_debug_information)(MYSQLND * const conn TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__change_user)(MYSQLND * const conn, const char * user, const char * passwd, const char * db, zend_bool silent TSRMLS_DC);

typedef unsigned int        (*func_mysqlnd_conn__get_error_no)(const MYSQLND * const conn TSRMLS_DC);
typedef const char *        (*func_mysqlnd_conn__get_error_str)(const MYSQLND * const conn TSRMLS_DC);
typedef const char *        (*func_mysqlnd_conn__get_sqlstate)(const MYSQLND * const conn TSRMLS_DC);
typedef uint64_t            (*func_mysqlnd_conn__get_thread_id)(const MYSQLND * const conn TSRMLS_DC);
typedef void                (*func_mysqlnd_conn__get_statistics)(const MYSQLND * const conn, zval *return_value TSRMLS_DC ZEND_FILE_LINE_DC);

typedef unsigned long        (*func_mysqlnd_conn__get_server_version)(const MYSQLND * const conn TSRMLS_DC);
typedef const char *        (*func_mysqlnd_conn__get_server_information)(const MYSQLND * const conn TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__get_server_statistics)(MYSQLND *conn, char **message, unsigned int * message_len TSRMLS_DC);
typedef const char *        (*func_mysqlnd_conn__get_host_information)(const MYSQLND * const conn TSRMLS_DC);
typedef unsigned int        (*func_mysqlnd_conn__get_protocol_information)(const MYSQLND * const conn TSRMLS_DC);
typedef const char *        (*func_mysqlnd_conn__get_last_message)(const MYSQLND * const conn TSRMLS_DC);
typedef const char *        (*func_mysqlnd_conn__charset_name)(const MYSQLND * const conn TSRMLS_DC);
typedef MYSQLND_RES *        (*func_mysqlnd_conn__list_fields)(MYSQLND *conn, const char *table, const char *achtung_wild TSRMLS_DC);
typedef MYSQLND_RES *        (*func_mysqlnd_conn__list_method)(MYSQLND *conn, const char *query, const char *achtung_wild, char *par1 TSRMLS_DC);

typedef uint64_t            (*func_mysqlnd_conn__get_last_insert_id)(const MYSQLND * const conn TSRMLS_DC);
typedef uint64_t            (*func_mysqlnd_conn__get_affected_rows)(const MYSQLND * const conn TSRMLS_DC);
typedef unsigned int        (*func_mysqlnd_conn__get_warning_count)(const MYSQLND * const conn TSRMLS_DC);

typedef unsigned int        (*func_mysqlnd_conn__get_field_count)(const MYSQLND * const conn TSRMLS_DC);

typedef enum_func_status    (*func_mysqlnd_conn__set_server_option)(MYSQLND * const conn, enum_mysqlnd_server_option option TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__set_client_option)(MYSQLND * const conn, enum_mysqlnd_option option, const char * const value TSRMLS_DC);
typedef void                (*func_mysqlnd_conn__free_contents)(MYSQLND *conn TSRMLS_DC);    /* private */
typedef void                (*func_mysqlnd_conn__free_options)(MYSQLND * conn TSRMLS_DC);    /* private */
typedef enum_func_status    (*func_mysqlnd_conn__close)(MYSQLND *conn, enum_connection_close_type close_type TSRMLS_DC);
typedef void                (*func_mysqlnd_conn__dtor)(MYSQLND *conn TSRMLS_DC);    /* private */

typedef enum_func_status    (*func_mysqlnd_conn__query_read_result_set_header)(MYSQLND *conn, MYSQLND_STMT *stmt TSRMLS_DC);

typedef MYSQLND *            (*func_mysqlnd_conn__get_reference)(MYSQLND * const conn TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__free_reference)(MYSQLND * const conn TSRMLS_DC);
typedef enum mysqlnd_connection_state (*func_mysqlnd_conn__get_state)(MYSQLND * const conn TSRMLS_DC);
typedef void                (*func_mysqlnd_conn__set_state)(MYSQLND * const conn, enum mysqlnd_connection_state new_state TSRMLS_DC);

typedef enum_func_status    (*func_mysqlnd_conn__simple_command)(MYSQLND *conn, enum php_mysqlnd_server_command command, const char * const arg, size_t arg_len, enum mysqlnd_packet_type ok_packet, zend_bool silent, zend_bool ignore_upsert_status TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__simple_command_handle_response)(MYSQLND *conn, enum mysqlnd_packet_type ok_packet, zend_bool silent, enum php_mysqlnd_server_command command, zend_bool ignore_upsert_status TSRMLS_DC);

typedef enum_func_status    (*func_mysqlnd_conn__restart_psession)(MYSQLND *conn TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__end_psession)(MYSQLND *conn TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__send_close)(MYSQLND * conn TSRMLS_DC);

typedef enum_func_status    (*func_mysqlnd_conn__ssl_set)(MYSQLND * const conn, const char * key, const char * const cert, const char * const ca, const char * const capath, const char * const cipher TSRMLS_DC);

typedef MYSQLND_RES *         (*func_mysqlnd_conn__result_init)(unsigned int field_count, zend_bool persistent TSRMLS_DC);

typedef enum_func_status    (*func_mysqlnd_conn__set_autocommit)(MYSQLND * conn, unsigned int mode TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__tx_commit)(MYSQLND * conn TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_conn__tx_rollback)(MYSQLND * conn TSRMLS_DC);


struct st_mysqlnd_conn_methods
{
    func_mysqlnd_conn__init init;
    func_mysqlnd_conn__connect connect;
    func_mysqlnd_conn__escape_string escape_string;
    func_mysqlnd_conn__set_charset set_charset;
    func_mysqlnd_conn__query query;
    func_mysqlnd_conn__send_query send_query;
    func_mysqlnd_conn__reap_query reap_query;
    func_mysqlnd_conn__use_result use_result;
    func_mysqlnd_conn__store_result store_result;
    func_mysqlnd_conn__next_result next_result;
    func_mysqlnd_conn__more_results more_results;

    func_mysqlnd_conn__stmt_init stmt_init;

    func_mysqlnd_conn__shutdown_server shutdown_server;
    func_mysqlnd_conn__refresh_server refresh_server;

    func_mysqlnd_conn__ping ping;
    func_mysqlnd_conn__kill_connection kill_connection;
    func_mysqlnd_conn__select_db select_db;
    func_mysqlnd_conn__server_dump_debug_information server_dump_debug_information;
    func_mysqlnd_conn__change_user change_user;

    func_mysqlnd_conn__get_error_no get_error_no;
    func_mysqlnd_conn__get_error_str get_error_str;
    func_mysqlnd_conn__get_sqlstate get_sqlstate;
    func_mysqlnd_conn__get_thread_id get_thread_id;
    func_mysqlnd_conn__get_statistics get_statistics;

    func_mysqlnd_conn__get_server_version get_server_version;
    func_mysqlnd_conn__get_server_information get_server_information;
    func_mysqlnd_conn__get_server_statistics get_server_statistics;
    func_mysqlnd_conn__get_host_information get_host_information;
    func_mysqlnd_conn__get_protocol_information get_protocol_information;
    func_mysqlnd_conn__get_last_message get_last_message;
    func_mysqlnd_conn__charset_name charset_name;
    func_mysqlnd_conn__list_fields list_fields;
    func_mysqlnd_conn__list_method list_method;

    func_mysqlnd_conn__get_last_insert_id get_last_insert_id;
    func_mysqlnd_conn__get_affected_rows get_affected_rows;
    func_mysqlnd_conn__get_warning_count get_warning_count;

    func_mysqlnd_conn__get_field_count get_field_count;

    func_mysqlnd_conn__set_server_option set_server_option;
    func_mysqlnd_conn__set_client_option set_client_option;
    func_mysqlnd_conn__free_contents free_contents;
    func_mysqlnd_conn__free_options free_options;
    func_mysqlnd_conn__close close;
    func_mysqlnd_conn__dtor dtor;

    func_mysqlnd_conn__query_read_result_set_header query_read_result_set_header;

    func_mysqlnd_conn__get_reference get_reference;
    func_mysqlnd_conn__free_reference free_reference;
    func_mysqlnd_conn__get_state get_state;
    func_mysqlnd_conn__set_state set_state;

    func_mysqlnd_conn__simple_command simple_command;
    func_mysqlnd_conn__simple_command_handle_response simple_command_handle_response;

    func_mysqlnd_conn__restart_psession restart_psession;
    func_mysqlnd_conn__end_psession end_psession;
    func_mysqlnd_conn__send_close send_close;

    func_mysqlnd_conn__ssl_set ssl_set;

    func_mysqlnd_conn__result_init result_init;
#ifdef AUTOCOMMIT_TX_COMMIT_ROLLBACK
    func_mysqlnd_conn__set_autocommit set_autocommit;
    func_mysqlnd_conn__tx_commit tx_commit;
    func_mysqlnd_conn__tx_rollback tx_rollback;
#endif
};




typedef mysqlnd_fetch_row_func    fetch_row;
typedef mysqlnd_fetch_row_func    fetch_row_normal_buffered; /* private */
typedef mysqlnd_fetch_row_func    fetch_row_normal_unbuffered; /* private */

typedef MYSQLND_RES *        (*func_mysqlnd_res__use_result)(MYSQLND_RES * const result, zend_bool ps_protocol TSRMLS_DC);
typedef MYSQLND_RES *        (*func_mysqlnd_res__store_result)(MYSQLND_RES * result, MYSQLND * const conn, zend_bool ps TSRMLS_DC);
typedef void                 (*func_mysqlnd_res__fetch_into)(MYSQLND_RES *result, unsigned int flags, zval *return_value, enum_mysqlnd_extension ext TSRMLS_DC ZEND_FILE_LINE_DC);
typedef MYSQLND_ROW_C         (*func_mysqlnd_res__fetch_row_c)(MYSQLND_RES *result TSRMLS_DC);
typedef void                 (*func_mysqlnd_res__fetch_all)(MYSQLND_RES *result, unsigned int flags, zval *return_value TSRMLS_DC ZEND_FILE_LINE_DC);
typedef void                 (*func_mysqlnd_res__fetch_field_data)(MYSQLND_RES *result, unsigned int offset, zval *return_value TSRMLS_DC);
typedef uint64_t            (*func_mysqlnd_res__num_rows)(const MYSQLND_RES * const result TSRMLS_DC);
typedef unsigned int        (*func_mysqlnd_res__num_fields)(const MYSQLND_RES * const result TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_res__skip_result)(MYSQLND_RES * const result TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_res__seek_data)(MYSQLND_RES * result, uint64_t row TSRMLS_DC);
typedef MYSQLND_FIELD_OFFSET (*func_mysqlnd_res__seek_field)(MYSQLND_RES * const result, MYSQLND_FIELD_OFFSET field_offset TSRMLS_DC);
typedef MYSQLND_FIELD_OFFSET (*func_mysqlnd_res__field_tell)(const MYSQLND_RES * const result TSRMLS_DC);
typedef const MYSQLND_FIELD *(*func_mysqlnd_res__fetch_field)(MYSQLND_RES * const result TSRMLS_DC);
typedef const MYSQLND_FIELD *(*func_mysqlnd_res__fetch_field_direct)(MYSQLND_RES * const result, MYSQLND_FIELD_OFFSET fieldnr TSRMLS_DC);
typedef const MYSQLND_FIELD *(*func_mysqlnd_res__fetch_fields)(MYSQLND_RES * const result TSRMLS_DC);

typedef enum_func_status    (*func_mysqlnd_res__read_result_metadata)(MYSQLND_RES *result, MYSQLND * conn TSRMLS_DC);
typedef unsigned long *        (*func_mysqlnd_res__fetch_lengths)(MYSQLND_RES * const result TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_res__store_result_fetch_data)(MYSQLND * const conn, MYSQLND_RES *result, MYSQLND_RES_METADATA *meta, zend_bool binary_protocol, zend_bool to_cache TSRMLS_DC);
typedef enum_func_status     (*func_mysqlnd_res__initialize_result_set_rest)(MYSQLND_RES * const result TSRMLS_DC);

typedef void                (*func_mysqlnd_res__free_result_buffers)(MYSQLND_RES * result TSRMLS_DC);    /* private */
typedef enum_func_status    (*func_mysqlnd_res__free_result)(MYSQLND_RES * result, zend_bool implicit TSRMLS_DC);
typedef void                (*func_mysqlnd_res__free_result_internal)(MYSQLND_RES *result TSRMLS_DC);
typedef void                (*func_mysqlnd_res__free_result_contents)(MYSQLND_RES *result TSRMLS_DC);
typedef void                (*func_mysqlnd_res__free_buffered_data)(MYSQLND_RES *result TSRMLS_DC);
typedef void                (*func_mysqlnd_res__unbuffered_free_last_data)(MYSQLND_RES *result TSRMLS_DC);

    /* for decoding - binary or text protocol */
typedef enum_func_status    (*func_mysqlnd_res__row_decoder)(MYSQLND_MEMORY_POOL_CHUNK * row_buffer, zval ** fields,
                                    unsigned int field_count, MYSQLND_FIELD *fields_metadata,
                                    zend_bool persistent,
                                    zend_bool as_unicode, zend_bool as_int_or_float,
                                    MYSQLND_STATS * stats TSRMLS_DC);

typedef MYSQLND_RES_METADATA * (*func_mysqlnd_res__result_meta_init)(unsigned int field_count, zend_bool persistent TSRMLS_DC);

struct st_mysqlnd_res_methods
{
    mysqlnd_fetch_row_func    fetch_row;
    mysqlnd_fetch_row_func    fetch_row_normal_buffered; /* private */
    mysqlnd_fetch_row_func    fetch_row_normal_unbuffered; /* private */

    func_mysqlnd_res__use_result use_result;
    func_mysqlnd_res__store_result store_result;
    func_mysqlnd_res__fetch_into fetch_into;
    func_mysqlnd_res__fetch_row_c fetch_row_c;
    func_mysqlnd_res__fetch_all fetch_all;
    func_mysqlnd_res__fetch_field_data fetch_field_data;
    func_mysqlnd_res__num_rows num_rows;
    func_mysqlnd_res__num_fields num_fields;
    func_mysqlnd_res__skip_result skip_result;
    func_mysqlnd_res__seek_data seek_data;
    func_mysqlnd_res__seek_field seek_field;
    func_mysqlnd_res__field_tell field_tell;
    func_mysqlnd_res__fetch_field fetch_field;
    func_mysqlnd_res__fetch_field_direct fetch_field_direct;
    func_mysqlnd_res__fetch_fields fetch_fields;
    func_mysqlnd_res__read_result_metadata read_result_metadata;
    func_mysqlnd_res__fetch_lengths fetch_lengths;
    func_mysqlnd_res__store_result_fetch_data store_result_fetch_data;
    func_mysqlnd_res__initialize_result_set_rest initialize_result_set_rest;
    func_mysqlnd_res__free_result_buffers free_result_buffers;
    func_mysqlnd_res__free_result free_result;
    func_mysqlnd_res__free_result_internal free_result_internal;
    func_mysqlnd_res__free_result_contents free_result_contents;
    func_mysqlnd_res__free_buffered_data free_buffered_data;
    func_mysqlnd_res__unbuffered_free_last_data unbuffered_free_last_data;

    /* for decoding - binary or text protocol */
    func_mysqlnd_res__row_decoder row_decoder;

    func_mysqlnd_res__result_meta_init result_meta_init;

    void * unused1;
    void * unused2;
    void * unused3;
    void * unused4;
    void * unused5;
};


typedef const MYSQLND_FIELD *    (*func_mysqlnd_res_meta__fetch_field)(MYSQLND_RES_METADATA * const meta TSRMLS_DC);
typedef const MYSQLND_FIELD *    (*func_mysqlnd_res_meta__fetch_field_direct)(const MYSQLND_RES_METADATA * const meta, MYSQLND_FIELD_OFFSET fieldnr TSRMLS_DC);
typedef const MYSQLND_FIELD *    (*func_mysqlnd_res_meta__fetch_fields)(MYSQLND_RES_METADATA * const meta TSRMLS_DC);
typedef MYSQLND_FIELD_OFFSET    (*func_mysqlnd_res_meta__field_tell)(const MYSQLND_RES_METADATA * const meta TSRMLS_DC);
typedef enum_func_status        (*func_mysqlnd_res_meta__read_metadata)(MYSQLND_RES_METADATA * const meta, MYSQLND * conn TSRMLS_DC);
typedef MYSQLND_RES_METADATA *    (*func_mysqlnd_res_meta__clone_metadata)(const MYSQLND_RES_METADATA * const meta, zend_bool persistent TSRMLS_DC);
typedef void                    (*func_mysqlnd_res_meta__free_metadata)(MYSQLND_RES_METADATA * meta TSRMLS_DC);

struct st_mysqlnd_res_meta_methods
{
    func_mysqlnd_res_meta__fetch_field fetch_field;
    func_mysqlnd_res_meta__fetch_field_direct fetch_field_direct;
    func_mysqlnd_res_meta__fetch_fields fetch_fields;
    func_mysqlnd_res_meta__field_tell field_tell;
    func_mysqlnd_res_meta__read_metadata read_metadata;
    func_mysqlnd_res_meta__clone_metadata clone_metadata;
    func_mysqlnd_res_meta__free_metadata free_metadata;
};


typedef enum_func_status    (*func_mysqlnd_stmt__prepare)(MYSQLND_STMT * const stmt, const char * const query, unsigned int query_len TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__execute)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef MYSQLND_RES *        (*func_mysqlnd_stmt__use_result)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef MYSQLND_RES *        (*func_mysqlnd_stmt__store_result)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef MYSQLND_RES *        (*func_mysqlnd_stmt__get_result)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef zend_bool            (*func_mysqlnd_stmt__more_results)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__next_result)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__free_result)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__seek_data)(const MYSQLND_STMT * const stmt, uint64_t row TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__reset)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__net_close)(MYSQLND_STMT * const stmt, zend_bool implicit TSRMLS_DC); /* private */
typedef enum_func_status    (*func_mysqlnd_stmt__dtor)(MYSQLND_STMT * const stmt, zend_bool implicit TSRMLS_DC); /* use this for mysqlnd_stmt_close */
typedef enum_func_status    (*func_mysqlnd_stmt__fetch)(MYSQLND_STMT * const stmt, zend_bool * const fetched_anything TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__bind_parameters)(MYSQLND_STMT * const stmt, MYSQLND_PARAM_BIND * const param_bind TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__bind_one_parameter)(MYSQLND_STMT * const stmt, unsigned int param_no, zval * const zv, zend_uchar    type TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__refresh_bind_param)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__bind_result)(MYSQLND_STMT * const stmt, MYSQLND_RESULT_BIND * const result_bind TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__bind_one_result)(MYSQLND_STMT * const stmt, unsigned int param_no TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__send_long_data)(MYSQLND_STMT * const stmt, unsigned int param_num, const char * const data, unsigned long length TSRMLS_DC);
typedef MYSQLND_RES *        (*func_mysqlnd_stmt__get_parameter_metadata)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef MYSQLND_RES *        (*func_mysqlnd_stmt__get_result_metadata)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef uint64_t            (*func_mysqlnd_stmt__get_last_insert_id)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef uint64_t            (*func_mysqlnd_stmt__get_affected_rows)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef uint64_t            (*func_mysqlnd_stmt__get_num_rows)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef unsigned int        (*func_mysqlnd_stmt__get_param_count)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef unsigned int        (*func_mysqlnd_stmt__get_field_count)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef unsigned int        (*func_mysqlnd_stmt__get_warning_count)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef unsigned int        (*func_mysqlnd_stmt__get_error_no)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef const char *        (*func_mysqlnd_stmt__get_error_str)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef const char *        (*func_mysqlnd_stmt__get_sqlstate)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__get_attribute)(const MYSQLND_STMT * const stmt, enum mysqlnd_stmt_attr attr_type, void * const value TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__set_attribute)(MYSQLND_STMT * const stmt, enum mysqlnd_stmt_attr attr_type, const void * const value TSRMLS_DC);
typedef MYSQLND_PARAM_BIND *(*func_mysqlnd_stmt__alloc_param_bind)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef MYSQLND_RESULT_BIND*(*func_mysqlnd_stmt__alloc_result_bind)(MYSQLND_STMT * const stmt TSRMLS_DC);
typedef    void                 (*func_mysqlnd_stmt__free_parameter_bind)(MYSQLND_STMT * const stmt, MYSQLND_PARAM_BIND * TSRMLS_DC);
typedef    void                 (*func_mysqlnd_stmt__free_result_bind)(MYSQLND_STMT * const stmt, MYSQLND_RESULT_BIND * TSRMLS_DC);
typedef unsigned int        (*func_mysqlnd_stmt__server_status)(const MYSQLND_STMT * const stmt TSRMLS_DC);
typedef enum_func_status     (*func_mysqlnd_stmt__generate_execute_request)(MYSQLND_STMT * const s, zend_uchar ** request, size_t *request_len, zend_bool * free_buffer TSRMLS_DC);
typedef enum_func_status    (*func_mysqlnd_stmt__parse_execute_response)(MYSQLND_STMT * const s TSRMLS_DC);
typedef void                 (*func_mysqlnd_stmt__free_stmt_content)(MYSQLND_STMT * const s TSRMLS_DC);

struct st_mysqlnd_stmt_methods
{
    func_mysqlnd_stmt__prepare prepare;
    func_mysqlnd_stmt__execute execute;
    func_mysqlnd_stmt__use_result use_result;
    func_mysqlnd_stmt__store_result store_result;
    func_mysqlnd_stmt__get_result get_result;
    func_mysqlnd_stmt__more_results more_results;
    func_mysqlnd_stmt__next_result next_result;
    func_mysqlnd_stmt__free_result free_result;
    func_mysqlnd_stmt__seek_data seek_data;
    func_mysqlnd_stmt__reset reset;
    func_mysqlnd_stmt__net_close net_close;
    func_mysqlnd_stmt__dtor dtor;
    func_mysqlnd_stmt__fetch fetch;

    func_mysqlnd_stmt__bind_parameters bind_parameters;
    func_mysqlnd_stmt__bind_one_parameter bind_one_parameter;
    func_mysqlnd_stmt__refresh_bind_param refresh_bind_param;
    func_mysqlnd_stmt__bind_result bind_result;
    func_mysqlnd_stmt__bind_one_result bind_one_result;
    func_mysqlnd_stmt__send_long_data send_long_data;
    func_mysqlnd_stmt__get_parameter_metadata get_parameter_metadata;
    func_mysqlnd_stmt__get_result_metadata get_result_metadata;

    func_mysqlnd_stmt__get_last_insert_id get_last_insert_id;
    func_mysqlnd_stmt__get_affected_rows get_affected_rows;
    func_mysqlnd_stmt__get_num_rows get_num_rows;

    func_mysqlnd_stmt__get_param_count get_param_count;
    func_mysqlnd_stmt__get_field_count get_field_count;
    func_mysqlnd_stmt__get_warning_count get_warning_count;

    func_mysqlnd_stmt__get_error_no get_error_no;
    func_mysqlnd_stmt__get_error_str get_error_str;
    func_mysqlnd_stmt__get_sqlstate get_sqlstate;

    func_mysqlnd_stmt__get_attribute get_attribute;
    func_mysqlnd_stmt__set_attribute set_attribute;

    func_mysqlnd_stmt__alloc_param_bind alloc_parameter_bind;
    func_mysqlnd_stmt__alloc_result_bind alloc_result_bind;

    func_mysqlnd_stmt__free_parameter_bind free_parameter_bind;
    func_mysqlnd_stmt__free_result_bind free_result_bind;

    func_mysqlnd_stmt__server_status get_server_status;

    func_mysqlnd_stmt__generate_execute_request generate_execute_request;
    func_mysqlnd_stmt__parse_execute_response parse_execute_response;

    func_mysqlnd_stmt__free_stmt_content free_stmt_content;
};


struct st_mysqlnd_net
{
    php_stream            *stream;
    struct st_mysqlnd_net_methods m;

    /* sequence for simple checking of correct packets */
    zend_uchar            packet_no;
    zend_bool            compressed;
    zend_uchar            compressed_envelope_packet_no;
#ifdef MYSQLND_COMPRESSION_ENABLED
    MYSQLND_READ_BUFFER    * uncompressed_data;
#endif
#ifdef MYSQLND_DO_WIRE_CHECK_BEFORE_COMMAND
    zend_uchar            last_command;
#endif
    /* cmd buffer */
    MYSQLND_CMD_BUFFER    cmd_buffer;

    MYSQLND_NET_OPTIONS    options;

    zend_bool            persistent;
};


struct st_mysqlnd_protocol
{
    struct st_mysqlnd_protocol_methods m;
    zend_bool persistent;
};


struct st_mysqlnd_connection
{
/* Operation related */
    MYSQLND_NET        * net;
    MYSQLND_PROTOCOL * protocol;

/* Information related */
    char            *host;
    unsigned int    host_len;
    char            *unix_socket;
    unsigned int    unix_socket_len;
    char            *user;
    unsigned int    user_len;
    char            *passwd;
    unsigned int    passwd_len;
    char            *scheme;
    unsigned int    scheme_len;
    uint64_t        thread_id;
    char            *server_version;
    char            *host_info;
    unsigned char    *scramble;
    const MYSQLND_CHARSET *charset;
    const MYSQLND_CHARSET *greet_charset;
    char            *connect_or_select_db;
    unsigned int    connect_or_select_db_len;
    MYSQLND_INFILE    infile;
    unsigned int    protocol_version;
    unsigned long    max_packet_size;
    unsigned int    port;
    unsigned long    client_flag;
    unsigned long    server_capabilities;

    /* For UPSERT queries */
    MYSQLND_UPSERT_STATUS upsert_status;
    char            *last_message;
    unsigned int    last_message_len;

    /* If error packet, we use these */
    MYSQLND_ERROR_INFO    error_info;

    /*
      To prevent queries during unbuffered fetches. Also to
      mark the connection as destroyed for garbage collection.
    */
    enum mysqlnd_connection_state    state;
    enum_mysqlnd_query_type            last_query_type;
    /* Temporary storage between query and (use|store)_result() call */
    MYSQLND_RES                        *current_result;

    /*
      How many result sets reference this connection.
      It won't be freed until this number reaches 0.
      The last one, please close the door! :-)
      The result set objects can determine by inspecting
      'quit_sent' whether the connection is still valid.
    */
    unsigned int    refcount;

    /* Temporal storage for mysql_query */
    unsigned int    field_count;

    /* persistent connection */
    zend_bool        persistent;

    /* options */
    MYSQLND_OPTIONS    options;

    /* stats */
    MYSQLND_STATS    * stats;

    struct st_mysqlnd_conn_methods *m;
};


struct mysqlnd_field_hash_key
{
    zend_bool        is_numeric;
    unsigned long    key;
#if MYSQLND_UNICODE
    zstr            ustr;
    unsigned int    ulen;
#endif
};


struct st_mysqlnd_result_metadata
{
    MYSQLND_FIELD                    *fields;
    struct mysqlnd_field_hash_key    *zend_hash_keys;
    unsigned int                    current_field;
    unsigned int                    field_count;
    /* We need this to make fast allocs in rowp_read */
    unsigned int                    bit_fields_count;
    size_t                            bit_fields_total_len; /* trailing \0 not counted */
    zend_bool                        persistent;

    struct st_mysqlnd_res_meta_methods *m;
};


struct st_mysqlnd_buffered_result
{
    zval                **data;
    zval                **data_cursor;
    MYSQLND_MEMORY_POOL_CHUNK **row_buffers;
    uint64_t            row_count;
    uint64_t            initialized_rows;
    zend_bool            persistent;

    unsigned int        references;

    MYSQLND_ERROR_INFO    error_info;
};


struct st_mysqlnd_unbuffered_result
{
    /* For unbuffered (both normal and PS) */
    zval                **last_row_data;
    MYSQLND_MEMORY_POOL_CHUNK *last_row_buffer;

    uint64_t            row_count;
    zend_bool            eof_reached;
};


struct st_mysqlnd_res
{
    struct st_mysqlnd_res_methods m;

    MYSQLND                    *conn;
    enum_mysqlnd_res_type    type;
    unsigned int            field_count;

    /* For metadata functions */
    MYSQLND_RES_METADATA    *meta;

    /* To be used with store_result() - both normal and PS */
    MYSQLND_RES_BUFFERED        *stored_data;
    MYSQLND_RES_UNBUFFERED        *unbuf;

    /*
      Column lengths of current row - both buffered and unbuffered.
      For buffered results it duplicates the data found in **data
    */
    unsigned long            *lengths;

    struct st_mysqlnd_packet_row * row_packet;

    MYSQLND_MEMORY_POOL        * result_set_memory_pool;
    zend_bool                persistent;
};


struct st_mysqlnd_param_bind
{
    zval        *zv;
    zend_uchar    type;
    enum_param_bind_flags    flags;
};

struct st_mysqlnd_result_bind
{
    zval        *zv;
    zend_bool    bound;
};


struct st_mysqlnd_stmt_data
{
    MYSQLND                        *conn;
    unsigned long                stmt_id;
    unsigned long                flags;/* cursor is set here */
    enum_mysqlnd_stmt_state        state;
    unsigned int                warning_count;
    MYSQLND_RES                    *result;
    unsigned int                field_count;
    unsigned int                param_count;
    unsigned char                send_types_to_server;
    MYSQLND_PARAM_BIND            *param_bind;
    MYSQLND_RESULT_BIND            *result_bind;
    zend_bool                    result_zvals_separated_once;
    zend_bool                    persistent;

    MYSQLND_UPSERT_STATUS        upsert_status;

    MYSQLND_ERROR_INFO            error_info;

    zend_bool                    update_max_length;
    unsigned long                prefetch_rows;

    zend_bool                    cursor_exists;
    mysqlnd_stmt_use_or_store_func default_rset_handler;

    MYSQLND_CMD_BUFFER            execute_cmd_buffer;
    unsigned int                execute_count;/* count how many times the stmt was executed */
};


struct st_mysqlnd_stmt
{
    MYSQLND_STMT_DATA * data;
    struct st_mysqlnd_stmt_methods    *m;
    zend_bool persistent;
};

#endif /* MYSQLND_STRUCTS_H */

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