Discuz7 phpMysql operation class

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<? Php
/*
* MySql database connection class
* Mysql. class. php 2009.04.15 by Hackbaby
*/
Class dbstuff {
Var $ version = '';
Var $ querynum = 0;
Var $ link = null;
// Connect to the database
Function connect ($ dbhost, $ dbuser, $ dbpw, $ dbname, $ pconnect = 0, $ halt = TRUE, $ dbcharset2 = ''){
$ Conn = empty ($ pconnect )? 'Mysql _ connect ': 'mysql _ pconnect ';
If (! $ This-> link = @ $ conn ($ dbhost, $ dbuser, $ dbpw, 1 )){
$ Halt & $ this-> halt ('can not connect to MySQL Server ');
} Else {
If ($ this-> version ()> '4. 1 '){
Global $ charset, $ dbcharset;
$ Dbcharset = $ dbcharset2? $ Dbcharset2: $ dbcharset;
$ Dbcharset =! $ Dbcharset & in_array (strtolower ($ charset), array ('gbk', 'big5', 'utf-8 '))? Str_replace ('-', '', $ charset): $ dbcharset;
$ Serverset = $ dbcharset? 'Character _ set_connection = '. $ dbcharset.', character_set_results = '. $ dbcharset.', character_set_client = binary ':'';
$ Serverset. = $ this-> version ()> '5. 0.1 '? (Empty ($ serverset )? '': ','). 'SQL _ mode = \'\''):'';
$ Serverset & mysql_query ("SET $ serverset", $ this-> link );
}
$ Dbname & @ mysql_select_db ($ dbname, $ this-> link );
}

}
// Select a database
Function select_db ($ dbname ){
Return mysql_select_db ($ dbname, $ this-> link );
}
// Return method after database execution
Function fetch_array ($ query, $ result_type = MYSQL_ASSOC ){
Return mysql_fetch_array ($ query, $ result_type );
}
// Return the returned value after the fetch_array method is executed
Function fetch_first ($ SQL ){
Return $ this-> fetch_array ($ this-> query ($ SQL ));
}
// Return the returned value after the result method is executed
Function result_first ($ SQL ){
Return $ this-> result ($ this-> query ($ SQL), 0 );
}
// Perform database operations
Function query ($ SQL, $ type = ''){
Global $ debug, $ discuz_starttime, $ sqldebug, $ sqlspenttimes;
// Determine debug debugging
If (defined ('sys _ debug') & SYS_DEBUG ){
@ Include_once WEB_ROOT. './include/debug. func. php ';
Sqldebug ($ SQL );
}
//
$ Func = $ type = 'unbuffered' & @ function_exists ('mysql _ unbuffered_query ')?
'Mysql _ unbuffered_query ': 'mysql _ query ';
If (! ($ Query = $ func ($ SQL, $ this-> link ))){
If (in_array ($ this-> errno (), array (2006,201 3) & substr ($ type, 0, 5 )! = 'Retry '){
$ This-> close ();
Require './config. inc. php ';
$ This-> connect ($ dbhost, $ dbuser, $ dbpw, $ dbname, $ pconnect, true, $ dbcharset );
$ This-> query ($ SQL, 'retry'. $ type );
} Elseif ($ type! = 'Silent' & substr ($ type, 5 )! = 'Silent '){
$ This-> halt ('mysql Query error', $ SQL );
}
}
// Query the number of entries plus 1
$ This-> querynum ++;
Return $ query;
}
// Obtain the number of rows affected by the previous MySQL operation
Function affected_rows (){
Return mysql_affected_rows ($ this-> link );
}
// Database Text error prompt
Function error (){
Return ($ this-> link )? Mysql_error ($ this-> link): mysql_error ());
}
// Returns the numeric encoding of the error message in the previous MySQL operation.
Function errno (){
Return intval ($ this-> link )? Mysql_errno ($ this-> link): mysql_errno ());
}
// Return database operation results
Function result ($ query, $ row = 0 ){
$ Query = @ mysql_result ($ query, $ row );
Return $ query;
}
// Return the number of operations such as database query
Function num_rows ($ query ){
$ Query = mysql_num_rows ($ query );
Return $ query;
}
// Obtain the number of fields in the result set.
Function num_fields ($ query ){
Return mysql_num_fields ($ query );
}
// Release the result memory
Function free_result ($ query ){
Return mysql_free_result ($ query );
}
// Obtain the ID generated by the previous INSERT operation
Function insert_id (){
Return ($ id = mysql_insert_id ($ this-> link)> = 0? $ Id: $ this-> result ($ this-> query ("SELECT last_insert_id ()"), 0 );
}
// Return the query result as an array
Function fetch_row ($ query ){
$ Query = mysql_fetch_row ($ query );
Return $ query;
}
// Retrieve the column information from the result set and return it as an object
Function fetch_fields ($ query ){
Return mysql_fetch_field ($ query );
}
// Obtain the Mysql version
Function version (){
If (empty ($ this-> version )){
$ This-> version = mysql_get_server_info ($ this-> link );
}
Return $ this-> version;
}
// Close the connection
Function close (){
Return mysql_close ($ this-> link );
}
// Error message
Function halt ($ message = '', $ SQL = ''){
Define ('cache _ FORBIDDEN ', TRUE );
Require_once WEB_ROOT. './include/db_mysql_error.inc.php ';
}
}
?>