class – Mario

PHP benchmark class

Posted on 24.03.201024.03.2010 by mario

< ?php
/**
 * benchmark
 * @access public
 * @var $timing_start_times float
 * @var $timing_stop_times float
 */
class benchmark{

	public $timing_start_times;
	public $timing_stop_times;


	/**
	* benchmark::timer_start()
	* @access public
	* @param string $name
	* @return int
	*/
	public function timer_start($name = 'default'){
		$this->timing_start_times[$name] = explode(' ', microtime());
	}

	/**
	* benchmark::timer_stop()
	* @access public
	* @param string $name
	* @return
	*/
	public function timer_stop($name = 'default'){
		$this->timing_stop_times[$name] = explode(' ', microtime());
	}

	/**
	* benchmark::timer_result()
	* @access public
	* @param string $name
	* @return int
	*/
	public function timer_result($name = 'default'){
		if (!isset($this->timing_start_times[$name])) {
        	return 0;
    	}
    	if (!isset($this->timing_stop_times[$name])) {
        	$stop_time = explode(' ', microtime());
    	}
    	else
		{
        	$stop_time = $this->timing_stop_times[$name];
    	}
	    // do the big numbers first so the small ones aren't lost
	    $current = $stop_time[1] - $this->timing_start_times[$name][1];
	    $current += $stop_time[0] - $this->timing_start_times[$name][0];
	    return $current;
	}

}
?>

example code

< ?php
require_once "benchmark.class.php";
$bm = new benchmark();
?>
Test Inline Tags vs echo



< ?php $bm->timer_start('echo'); ?>
< ?php
for ($i=0; $i<1000; $i++) {
    echo $i."
";
}
?>
< ?php $bm->timer_stop('echo'); ?>



< ?php $bm->timer_start(str); ?>
< ?php
$str = '';
for ($i=0; $i<1000; $i++) {
    $str .= $i."
";
}
echo $str;
?>
< ?php $bm->timer_stop(str); ?>


 < ?php $bm->timer_start(inline); ?>
< ?php
for ($i=0; $i<1000; $i++) {
?>
123

< ?php
}
?>
< ?php $bm->timer_stop(inline); ?>





Result

echo - < ?php echo $bm->timer_result('echo'); ?>



str - < ?php echo $bm->timer_result(str); ?>



inline - < ?php echo $bm->timer_result(inline); ?>

Login Session PHP

Posted on 22.10.200922.10.2009 by mario

< ?php
class login{

	private $user = '';
	private $pass = '';

	/**
	 * login::__construct()
	 * @access public
	 */
	public function __construct(){
		session_name('login');
		session_start();
	}

	/**
	 * login::set_user()
	 * @access public
	 * @param string $user
	 * @return
	 */
	public function set_user($user){
		$this->user = $user;
	}

	/**
	 * login::set_pass()
	 * @access public
	 * @param string $pass
	 * @return
	 */
	public function set_pass($pass){
		$this->pass = $pass;
	}

	/**
	* @access public
	* @return bool
	* @return redirect
	*/
	public function is_logged_in(){
		if(isset($_SESSION['is_logged_in']) && $_SESSION['is_logged_in']== true){
			return true;
		}

		return false;
	}

	/**
	* Löscht Cookie und Session
	* @access public
	*/
	public function do_logout(){
		// Cookie clientseitig löschen
		if (isset ($_COOKIE[session_name ()]))
		{
			setcookie (session_name (), '', time ()-42000, '/');
		}
		// Cookie serverseitig löschen
		session_destroy ();
		$_COOKIE = null;
		$_SESSION = null;
	}

	/**
	* Login function
	* @access public
	* @param string $user Bentuzername
	* @param string $password Passwort
	* @return bool
	*/
	public function do_login($user,$password){
		if($user === $this->user && $password === $this->pass){
			$_SESSION['is_logged_in'] = true;
			return true;
		}

		$_SESSION['is_logged_in'] = false;
		return false;
	}
}
?>

< ?php
require_once "../classes/login.class.php";
$login = new login();
$login->set_user('admin');
$login->set_pass('admin');

if(isset($_GET['logout']) && $_GET['logout']==1){
	$login->do_logout();
}

if(isset($_POST['user'])){
	$login->do_login($_POST['user'],$_POST['pass']);
}

if($login->is_logged_in()== false){
	echo 'logged out';
	?>
< form action="" method="post" >
User: < input type="text" name="user" value="" / >< br / >
Pass: < input type="password" name="pass" value="" / >< br / >
< input type="submit" value="login" / >

< /form >
	< ?php
}
else
{
	echo 'logged in';
	?>
	< br / >< br / >< a href="?logout=1">Logout< /a >
	< ?php
}
?>
< br />< br />< a href="">Reload page< /a >

PHP cache class

Posted on 02.10.200902.10.2009 by mario

< ?php
/**
*
* @var $cache_file_name string file name
* @var $age int age in seconds
*/
class cache {

	public $cache_file_name;
	public $age;

	/**
	* cache::__construct()
	* @access public
	*/
	public function __construct(){
		$this->cache_start();
		register_shutdown_function(array($this, "cache_end"), "inside");
	}

	/**
	* cache::__descruct()
	* @access public
	* @return
	*/
	public function __descruct(){
		$this->cache_end();
	}

	/**
	* cache::cache_start()
	* @access public
	* @return
	*/
	public function cache_start(){

		global $cache_file_name, $age;
		$cache_file_name = 	$_SERVER["DOCUMENT_ROOT"].$_SERVER['REQUEST_URI'] . '_cache';

		if (empty($age)){
			$age = 600;
		}

		if(file_exists($cache_file_name)){
			if (filemtime($cache_file_name) + $age > time()) {
				readfile($cache_file_name);
				unset($cache_file_name);
				exit;
			}
		}
		ob_start();
	}

	/**
	* cache::cache_end()
	* @access public
	* @return
	*/
	public function cache_end()
	{
		global $cache_file_name;
		if (empty($cache_file_name)){
			return;
		}
		$str = ob_get_clean();
		echo $str;
		fwrite(fopen($cache_file_name . '_tmp', "w"), $str);
		rename($cache_file_name . '_tmp',$cache_file_name);
	}

}

?>

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