<?php
	
	//--> MySQL database class. Used in every file that accesses the database.
	class db {
		//--> Class variables, global accessibility
		public $mysql_host = '';
		public $mysql_user = '';
		public $mysql_pass = '';
		public $mysql_db = '';
		public $mysql_qcount = 0;
		public $mysql_debug = 0;
		public $error = 0;
	
		function __construct( $sql_host='', $sql_user='', $sql_pass='', $sql_db='', $sql_debug=0 ) {
			//--> Class constructor method, set up variables for future transactions
			$this->mysql_host = $sql_host;
			$this->mysql_user = $sql_user;
			$this->mysql_pass = $sql_pass;
			$this->mysql_db = $sql_db;
			$this->mysql_debug = $sql_debug;
		}			
		
		function sql_connect( ) {
			//--> Class function, connect to MySQL server
			$this->mysql_connection_result =  mysql_connect( $this->mysql_host, $this->mysql_user, $this->mysql_pass );
			if( !$this->mysql_connection_result ) {
				$error_msg = "Failed to connect to MySQL server <br />" . mysql_error( );
				die( $error_msg );
			}
			return 1;
		}
		
		function sql_select_db( ) {
			//--> Class function, select MySQL database
			$this->mysql_dbselect_result = mysql_select_db( $this->mysql_db );
			if( !$this->mysql_dbselect_result ) {
				$error_msg = "Failed to select database <br />" . mysql_error( );
				die( $error_msg );
			}
			return 1;
		}
		
		function sql_query_db( $sql_query ) {
			//--> Class function, query the selected MySQL database
			$this->mysql_qcount++;
			$this->mysql_query_result = mysql_query( $sql_query );
			//echo ( $sql_query );
			if( !$this->mysql_query_result ) {
				$error_msg = "Query error <br />" . $sql_query . "<br />" . mysql_error( );
				die( $error_msg );
			}
			return $this->mysql_query_result;
		}
		
		function sql_query_insert_many ( $sql_table, $sql_values ) {
			//--> Class function, execute many insert queries
			foreach( $sql_values as $vals ) {
				$sql_query = "INSERT INTO " . $sql_table . " ( " . $val . " ) ";
				$this->sql_query_db ( $sql_query );
			}
			return 1;
		}
			
		function sql_query_ret_obj( $sql_query ) {
			//--> Class function [Abstraction of $this->$sql_query_db()], query the selected MySQL database and return object
			$result = $this->sql_query_db( $sql_query );
			return mysql_fetch_object( $result );
		}
		
		function sql_ret_obj ( ) {
			return mysql_fetch_object( $this->mysql_query_result );
		}
		
		function sql_query_ret_array( $sql_query ) {
			//--> Class function [Abstraction of $this->$sql_query_db()], query the selected MySQL database and return object
			$result = $this->sql_query_db( $sql_query );
			return mysql_fetch_array( $result );
		}
		
		function sql_get_row( ) {
			//--> Class function, get next row from last query executed
			if( !isset( $this->mysql_query_result ) ) {
				$error_msg = "sql_get_row() before query <br />";
				die( $error_msg );
			}
			return mysql_fetch_row( $this->mysql_query_result );
		}
		
		function sql_get_num_rows( ) {
			//--> Class function, get number of rows resulting from last query
			if( !isset( $this->mysql_query_result ) ) {
				$error_msg = "sql_get_num_rows before query <br />";
				die( $error_msg );			
			}
			return mysql_affected_rows( $this->mysql_query_result );
		}
		
		function sql_get_last_autoid( ) {
			//--> Class function, get auto assigned id given to the last INSERT query
			if( !isset( $this->mysql_query_result ) ) {
				$error_msg = "sql_get_last_autoid before query <br />" . mysql_error( );
				die( $error_msg );
			}
			return mysql_insert_id( $this->mysql_query_result );
		}
	}

?>