Parte 1: Fijarse que todo pertenece a la clase EasySQL por lo que el parentesis de la clase EasySQL cierra al final de todo.
Código PHP:
<?php
class EasySQL{
var $SQLDatabase; // (objeto) Tipo Mixto. Puede tener instancias diferentes dependiendo del SGBD usado
var $SQLQuery; // (objeto) Crea consultas SQL de tipo: SQLQuery
var $connection; // (recurso) Conección con la BDatos
var $result; // (recurso) Recurso identificativo retornado por la clausula SELECT, o booleano si las clausulas fueron INSERT, UPDATE o DELETE
var $total_rows; // (valor) Número de filas seleccionadas o afectadas (INSERT, UPDATE, DELETE) por la última consulta ejecutada
function EasySQL($SQLDatabase = "", $host = "", $user = "", $password = "", $db_name = "", $port = ""){
$_default['SQLDatabase'] = ""; // SGBD por defecto (Ejemplo: "MySQL", "PostGreSQL", "SQLite", "SQL")
$_default['host'] = "localhost"; // Servidor o Host donde se haya hospedada la BDatos
$_default['user'] = "root"; // Usuario de conexión a la BDatos
$_default['password'] = ""; // Contraseña para acceder a la BDatos
$_default['db_name'] = ""; // BDatos que será seleccionada
$_default['port'] = ""; // Puerto de acceso a el SGBD. Dejar en blanco para usar el que trae la clase por defecto
$SQLDatabase = ($SQLDatabase != "") ? (string)$SQLDatabase : $_default['SQLDatabase'];
$host = ($host != "") ? (string)$host : $_default['host'];
$user = ($user != "") ? (string)$user : $_default['user'];
$password = ($password != "") ? (string)$password : $_default['password'];
$db_name = ($db_name != "") ? (string)$db_name : $_default['db_name'];
$port = ($port != "") ? (int)$port : $_default['port'];
$this->SQLQuery = new SQLQuery();
if(preg_match("/^(0|mysql)$/i",trim($SQLDatabase))){
// MySQL
if (!function_exists("mysql_connect")){
$this->error("Librería MySQL no encontrada.");
return false;
}else if(!class_exists("MySQL")){
$this->error("No se ha podido cargar la clase <strong>MySQL</strong>. Abortando <strong>" . __CLASS__ . "</strong> ejecución de la clase.");
return false;
}
$this->SQLDatabase = new MySQL($host, $user, $password, $db_name, $port);
}else if(preg_match("/^(1|pg|postgre(s|sql)?)$/i",trim($SQLDatabase))){
// PostGreSQL
if (!function_exists("pg_connect")){
$this->error("Librería PostGreSQL no encontrada.");
return false;
}else if (!class_exists("PostGreSQL")){
$this->error("No se ha podido cargar la clase <strong>PostGreSQL</strong>. Abortando ejecución de la clase <strong>" . __CLASS__ . "</strong>.");
return false;
}
$this->SQLDatabase = new PostGreSQL($host, $user, $password, $db_name, $port);
}else if (preg_match("/^(2|sqlite)$/i",trim($SQLDatabase))){
// SQLite
if (!function_exists("sqlite_open")){
$this->error("Librería SQLite no encontrada.");
return false;
}else if (!class_exists("SQLite")){
$this->error("No se ha podido cargar la clase <strong>SQLite</strong>. Abortando ejecución de la clase <strong>" . __CLASS__ . "</strong>.");
return false;
}
$this->SQLDatabase = new SQLite($host, $user, $password, $db_name, $port);
}else if (preg_match("/^(2|sql)$/i",trim($SQLDatabase))){
// SQL Server
if (!function_exists("sql_open")){
$this->error("Librería SQL no encontrada.");
return false;
}else if (!class_exists("SQL")){
$this->error("No se ha podido cargar la clase <strong>SQL</strong>. Abortando ejecución de la clase <strong>" . __CLASS__ . "</strong>.");
return false;
}
$this->SQLDatabase = new SQL($host, $user, $password, $db_name, $port);
}else{
$this->error("No se ha definido el tipo de Bases de Datos! Abortando ejecución de la clase <strong>" . __CLASS__ . "</strong>.");
return false;
}
$this->connection = false;
$this->result = false;
$this->total_rows = 0;
}
function connect($db_name = ""){
$db_name = ($db_name != "")?$db_name:$this->SQLDatabase->db_name;
$this->SQLDatabase->connect($this->connection, $db_name, false);
return $this->connection;
}
function pconnect($db_name = ""){
$db_name = ($db_name != "")?$db_name:$this->SQLDatabase->db_name;
$this->SQLDatabase->connect($this->connection, $db_name, true);
return $this->connection;
}
function disconnect(){
return $this->SQLDatabase->disconnect($this->connection);
}
function close(){
return $this->disconnect();
}
function query($query){
$was_connected = true;
$this->result = false;
$this->total_rows = 0;
if(!$this->connection){
$was_connected = false;
if(!$this->connect()){
$this->error();
return false;
}
}
$this->result = $this->SQLDatabase->query($query, $this->connection);
if(!$this->result){
$this->error();
return false;
}
if(is_bool($this->result)){
$this->total_rows = $this->SQLDatabase->affectedRows($this->result, $this->connection);
}
if(!$was_connected){
$this->disconnect();
}
return $this->result;
}
function fetchArray($result=""){
if($result==""){
$result = &$this->result;
}
return $this->SQLDatabase->fetchArray($result);
}
function fetchRow($result=""){
if($result==""){
$result = &$this->result;
}
return $this->SQLDatabase->fetchRow($result);
}
function fetchAssoc($result=""){
if ($result==""){
$result = &$this->result;
}
return $this->SQLDatabase->fetchAssoc($result);
}
function error($message=""){
if($message==""){
$message = $this->SQLDatabase->error($this->connection);
}
echo '<br /><span style="padding: 1px 7px 1px 7px; background-color: #ffd7d7; font-family: verdana; color: #000000; font-size: 13px;"><span style="color: #ff0000; font-weight: bold;">Error!</span> ' . $message . '</span><br />';
}
function useDatabase($db_name){
$this->SQLDatabase->db_name = (string)$db_name;
}
function useTable($table){
$this->SQLQuery->table = (string)$table;
}
function setFieldValue($field,$value,$is_sql_function=false){
$field = (string)$this->SQLDatabase->escape($field);
$value = (string)$this->SQLDatabase->escape($value);
$this->SQLQuery->values[$field]['value'] = $value;
$this->SQLQuery->values[$field]['is_sql_function'] = (bool)$is_sql_function;
}
function setWhere($where){
$this->SQLQuery->where = (string)$where;
}
function setLimit($limit){
$this->SQLQuery->limit = (string)$limit;
}
function setSelection($selection){
$this->SQLQuery->selection = (string)$selection;
}
function select(){
$no_limit_query = $this->SQLQuery->createSelect(false);
$return_query = $this->SQLQuery->createSelect();
$result = $this->query($return_query);
if(!$result){
return false;
}
$this->total_rows = $this->SQLDatabase->numRows($this->query($no_limit_query));
return $result;
}
function Insert(){
return $this->query($this->SQLQuery->createInsert());
}
function Update(){
return $this->query($this->SQLQuery->createUpdate());
}
function Delete(){
return $this->query($this->SQLQuery->createDelete());
}
function Truncate(){
return $this->query($this->SQLQuery->createTruncate());
}
} 
