Super simple PHPMVC-PHP Tutorial-php.cn

Use native PHP syntax to render pages and provide widget functions.

/**
* Obtaining and setting configuration parameters supports batch definition
* If $key is an associative array, the configuration will be written in the form of K-V
* If $key is a numeric index array, the corresponding configuration array will be returned
* @param string |array $key configuration variable
* @param array|null $value configuration value
* @return array|null
*/
function C($key,$value=null){
static $_config = array();
$args = func_num_args();
if( $args == 1){
if(is_string($key)){ //If the incoming key is a string
return isset($_config[$key])?$_config[$key]:null;
}
if(is_array($key)){
if(array_keys($key) !== range(0, count($key) - 1)){ //If the incoming key is an associative array
$_config = array_merge ($_config, $key);
}else{
$ret = array();
foreach ($key as $k) {
$ret[$k] = isset($_config[$k])?$_config [$k]:null;
}
return $ret;
}
}
}else{
if(is_string($key)){
$_config[$key] = $value;
}else{
halt( 'The parameters passed in are incorrect');
}
}
return null;
}
/**
* Call Widget
* @param string $name widget name
* @param array $data Variable list passed to widget, key is variable name, value is variable value
* @return void
*/
function W($name, $data = array()){
$fullName = $name. 'Widget';
if(!class_exists($fullName)){
halt('Widget '.$name.' does not exist');
}
$widget = new $fullName();
$widget->invoke ($data);
}
/**
* Terminate program execution
* @param string $str Termination reason
* @param bool $display Whether to display the call stack, not displayed by default
* @return void
*/
function halt($str, $display=false){
Log::fatal($str.' debug_backtrace:'.var_export(debug_backtrace(), true ));
header("Content-Type:text/html; charset=utf-8");
if($display){
echo "
```
";
```
debug_print_backtrace();
echo "";
}
echo $str;
exit;
}
/**
* Get database instance
* @return DB
*/
function M(){
$dbConf = C(array('DB_HOST','DB_PORT','DB_USER' ,'DB_PWD','DB_NAME','DB_CHARSET'));
return DB::getInstance($dbConf);
}
/**
* If the file exists, include it
* @param string $path file path
* @return void
*/
function includeIfExist($path){
if(file_exists( $path)){
include $path;
}
}
/**
* General control category
*/
class SinglePHP {
/**
* controller
* @var string
*/
private $c;
/**
* Action
* @var string
*/
private $a;
/**
* Singleton
* @var SinglePHP
*/
private static $_instance;
/**
* Constructor, initialization configuration
* @param array $conf
*/
private function __construct($conf){
C($conf);
}
private function __clone(){}
/**
* Get singleton
* @param array $conf
* @return SinglePHP
*/
public static function getInstance($conf){
if(!(self::$_instance instanceof self)){
self::$_instance = new self($ conf);
}
return self::$_instance;
}
/**
* Run application instance
* @access public
* @return void
*/
public function run(){
if(C('USE_SESSION') == true){
session_start();
}
C('APP_FULL_PATH', getcwd().'/'.C('APP_PATH').'/');
includeIfExist( C('APP_FULL_PATH').'/common.php');
$pathMod = C('PATH_MOD');
$pathMod = empty($pathMod)?'NORMAL':$pathMod;
spl_autoload_register(array('SinglePHP', 'autoload'));
if(strcmp(strtoupper($pathMod) ,'NORMAL') === 0 || !isset($_SERVER['PATH_INFO'])){
$this->c = isset($_GET['c'])?$_GET['c'] :'Index';
$this->a = isset($_GET['a'])?$_GET['a']:'Index';
}else{
$pathInfo = isset($_SERVER[' PATH_INFO'])?$_SERVER['PATH_INFO']:'';
$pathInfoArr = explode('/',trim($pathInfo,'/'));
if(isset($pathInfoArr[0]) && $ pathInfoArr[0] !== ''){
$this->c = $pathInfoArr[0];
}else{
$this->c = 'Index';
}
if(isset($pathInfoArr [1])){
$this->a = $pathInfoArr[1];
}else{
$this->a = 'Index';
}
}
if(!class_exists($this-> ;c.'Controller')){
halt('Controller'.$this->c.'does not exist');
}
$controllerClass = $this->c.'Controller';
$controller = new $controllerClass();
if(!method_exists($controller, $this->a.'Action')){
halt('method'.$this->a.'does not exist');
}
call_user_func(array($controller,$this->a.'Action'));
}
/**
* Automatic loading function
* @param string $class class name
*/
public static function autoload($class){
if(substr($class ,-10)=='Controller'){
includeIfExist(C('APP_FULL_PATH').'/Controller/'.$class.'.class.php');
}elseif(substr($class,-6) =='Widget'){
includeIfExist(C('APP_FULL_PATH').'/Widget/'.$class.'.class.php');
}else{
includeIfExist(C('APP_FULL_PATH').'/Lib/'.$class.'.class.php');
}
}
}
/**
* Controller class
*/
class Controller {
/**
* View instance
* @var View
*/
private $_view;
/**
* Constructor, initialize view instance, call hook
*/
public function __construct(){
$this->_view = new View();
$this->_init();
}
/**
* Pre-hook
*/
protected function _init(){}
/**
* Render the template and output
* @param null|string $tpl template file path
* The parameter is the relative path relative to App/View/file, does not include the suffix name, such as index/index
* If the parameter is empty, then $controller/$action.php is used by default
* If the parameter does not contain "/", $controller/$tpl is used by default
* @return void
*/
protected function display($tpl=''){
if($tpl === ''){
$trace = debug_backtrace();
$controller = substr($trace[1]['class'], 0, -10);
$action = substr($trace[1]['function'], 0 , -6);
$tpl = $controller . '/' . $action;
}elseif(strpos($tpl, '/') === false){
$trace = debug_backtrace();
$controller = substr($trace[1]['class'], 0, -10);
$tpl = $controller . '/' . $tpl;
}
$this->_view->display($tpl);
}
/**
* Set a template variable for the view engine
* @param string $name The variable name to be used in the template
* @param mixed $value The value corresponding to the variable name in the template
* @return void
*/
protected function assign($name,$value){
$this->_view->assign($name,$value);
}
/**
* Output the data to the browser in json format and stop executing the code
* @param array $data The data to be output
*/
protected function ajaxReturn($data){
echo json_encode($data);
exit;
}
/**
* Redirect to the specified url
* @param string $url The url to be redirected
* @param void
*/
protected function redirect($url){
header("Location: $url");
exit;
}
}
/**
* View class
*/
class View {
/**
* View file directory
* @var string
*/
private $_tplDir;
/**
* View file path
* @var string
*/
private $_viewPath;
/**
* View variable list
* @var array
*/
private $_data = array();
/**
* Variable list for tplInclude
* @var array
*/
private static $tmpData;
/**
* @param string $tplDir
*/
public function __construct($tplDir=''){
if($tplDir == ''){
$this->_tplDir = './'.C('APP_PATH').'/View/';
}else{
$this->_tplDir = $tplDir;
}
}
/**
* Set a template variable for the view engine
* @param string $key The variable name to be used in the template
* @param mixed $value The value corresponding to the variable name in the template
* @return void
*/
public function assign($key, $value) {
$this->_data[$key] = $value;
}
/**
* Render the template and output
* @param null|string $tplFile Template file path, relative path to App/View/file, does not include suffix name, such as index/index
* @return void
*/
public function display($tplFile) {
$this->_viewPath = $this->_tplDir . $tplFile . '.php';
unset($tplFile);
extract($this->_data);
include $this->_viewPath;
}
/**
* Used to include other templates in the template file
* @param string $path The path relative to the View directory
* @param array $data The variable list passed to the sub-template, key is the variable name, value is the variable value
* @return void
*/
public static function tplInclude($path, $data=array()){
self::$tmpData = array(
'path' => C('APP_FULL_PATH') . '/View/' . $path . '.php',
'data' => $data,
);
unset($path);
unset($data);
extract(self::$tmpData['data']);
include self::$tmpData['path'];
}
}
/**
* Widget class
* When using it, you need to inherit this class, rewrite the invoke method, and call display in the invoke method
*/
class Widget {
/**
* View instance
* @var View
*/
protected $_view;
/**
* Widget name
* @var string
*/
protected $_widgetName;
/**
* Constructor, initialize view instance
*/
public function __construct(){
$this->_widgetName = get_class($this);
$dir = C('APP_FULL_PATH') . '/Widget/Tpl/';
$this->_view = new View($dir);
}
/**
* Processing logic
* @param mixed $data parameter
*/
public function invoke($data){}
/**
* Render template
* @param string $tpl template path, if it is empty, use the class name as the template name
*/
protected function display($tpl=''){
if($tpl == ''){
$tpl = $this->_widgetName;
}
$this->_view->display($tpl);
}
/**
* Set a template variable for the view engine
* @param string $name The variable name to be used in the template
* @param mixed $value The value corresponding to the variable name in the template
* @return void
*/
protected function assign($name,$value){
$this->_view->assign($name,$value);
}
}
/**
* Database operation class
* Usage method:
* DB::getInstance($conf)->query('select * from table');
* where $conf is an associative array and needs to contain the following keys:
* DB_HOST DB_USER DB_PWD DB_NAME
* You can use DB_PORT and DB_CHARSET to specify the port and encoding. The default is 3306 and utf8
*/
class DB {
/**
* Database link
* @var resource
*/
private $_db;
/**
* Save the last sql
* @var string
*/
private $_lastSql;
/**
* The number of rows affected by the last sql statement
* @var int
*/
private $_rows;
/**
* Error in the last sql execution
* @var string
*/
private $_error;
/**
* Instance array
* @var array
*/
private static $_instance = array();
/**
* Constructor
* @param array $dbConf configuration array
*/
private function __construct($dbConf){
if(!isset($dbConf['DB_CHARSET'])){
$dbConf['DB_CHARSET'] = 'utf8';
}
$this->_db = mysql_connect($dbConf['DB_HOST'].':'.$dbConf['DB_PORT'],$dbConf['DB_USER'],$dbConf['DB_PWD']);
if($this->_db === false){
halt(mysql_error());
}
$selectDb = mysql_select_db($dbConf['DB_NAME'],$this->_db);
if($selectDb === false){
halt(mysql_error());
}
mysql_set_charset($dbConf['DB_CHARSET']);
}
private function __clone(){}
/**
* Get DB class
* @param array $dbConf configuration array
* @return DB
*/
static public function getInstance($dbConf){
if(!isset($dbConf['DB_PORT'])){
$dbConf['DB_PORT'] = '3306';
}
$key = $dbConf['DB_HOST'].':'.$dbConf['DB_PORT'];
if(!isset(self::$_instance[$key]) || !(self::$_instance[$key] instanceof self)){
self::$_instance[$key] = new self($dbConf);
}
return self::$_instance[$key];
}
/**
* Escaped string
* @param string $str The string to be escaped
* @return string The escaped string
*/
public function escape($str){
return mysql_real_escape_string($str, $this->_db);
}
/**
* Query, used for select statements
* @param string $sql The sql to be queried
* @return bool|array If the query succeeds, it returns the corresponding array, if it fails, it returns false
*/
public function query($sql){
$this->_rows = 0;
$this->_error = '';
$this->_lastSql = $sql;
$this->logSql();
$res = mysql_query($sql,$this->_db);
if($res === false){
$this->_error = mysql_error($this->_db);
$this->logError();
return false;
}else{
$this->_rows = mysql_num_rows($res);
$result = array();
if($this->_rows >0) {
while($row = mysql_fetch_array($res, MYSQL_ASSOC)){
$result[] = $row;
}
mysql_data_seek($res,0);
}
return $result;
}
}
/**
* Query, used for insert/update/delete statements
* @param string $sql The sql to be queried
* @return bool|int If the query succeeds, it returns the number of affected records, if it fails, it returns false
*/
public function execute($sql) {
$this->_rows = 0;
$this->_error = '';
$this->_lastSql = $sql;
$this->logSql();
$result = mysql_query($sql, $this->_db) ;
if ( false === $result) {
$this->_error = mysql_error($this->_db);
$this->logError();
return false;
} else {
$this->_rows = mysql_affected_rows($this->_db);
return $this->_rows;
}
}
/**
* Get the number of records affected by the last query
* @return int The number of records affected
*/
public function getRows(){
return $this->_rows;
}
/**
* Get the auto-increment ID generated after the last insert
* @return int Auto-increment ID
*/
public function getInsertId() {
return mysql_insert_id($this->_db);
}
/**
* Get the sql of the last query
* @return string sql
*/
public function getLastSql(){
return $this->_lastSql;
}
/**
* Get the error information of the last query
* @return string error information
*/
public function getError(){
return $this->_error;
}
/**
* Record sql to file
*/
private function logSql(){
Log::sql($this->_lastSql);
}
/**
* Record error log to file
*/
private function logError(){
$str = '[SQL ERR]'.$this->_error.' SQL:'.$this->_lastSql;
Log::warn($str);
}
}
/**
* Log class
* Usage method: Log::fatal('error msg');
* The saving path is App/Log, stored by day
* Fatal and warning will be recorded in the .log.wf file
*/
class Log{
/**
* Logging, supports SAE environment
* @param string $msg Log content
* @param string $level Log level
* @param bool $wf Whether it is an error log
*/
public static function write($msg, $level='DEBUG', $wf=false){
if(function_exists('sae_debug')){ //如果是SAE，则使用sae_debug函数打日志
$msg = "[{$level}]".$msg;
sae_set_display_errors(false);
sae_debug(trim($msg));
sae_set_display_errors(true);
}else{
$msg = date('[ Y-m-d H:i:s ]')."[{$level}]".$msg."rn";
$logPath = C('APP_FULL_PATH').'/Log/'.date('Ymd').'.log';
if($wf){
$logPath .= '.wf';
}
file_put_contents($logPath, $msg, FILE_APPEND);
}
}
/**
* Print fatal log
* @param string $msg Log information
*/
public static function fatal($msg){
self::write($msg, 'FATAL', true);
}
/**
* Print warning log
* @param string $msg Log information
*/
public static function warn($msg){
self::write($msg, 'WARN', true);
}
/**
* Print notice log
* @param string $msg Log information
*/
public static function notice($msg){
self::write($msg, 'NOTICE');
}
/**
* Print debug log
* @param string $msg Log information
*/
public static function debug($msg){
self::write($msg, 'DEBUG');
}
/**
* Print sql log
* @param string $msg Log information
*/
public static function sql($msg){
self::write($msg, 'SQL');
}
}
/**
* ExtException class, records additional exception information
*/
class ExtException extends Exception{
/**
* @var array
*/
protected $extra;
/**
* @param string $message
* @param array $extra
* @param int $code
* @param null $previous
*/
public function __construct($message = "", $extra = array(), $code = 0, $previous = null){
$this->extra = $extra;
parent::__construct($message, $code, $previous);
}
/**
* Get additional exception information
* @return array
*/
public function getExtra(){
return $this->extra;
}
}

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