Шамсудин Сердеров

public function handle(Request $request, Closure $next)
    {
        $response = $next($request);
        $buffer = $response->getContent();

        $replace = [
            '/<!--[^\[](.*?)[^\]]-->/s' => '',
            "/<\?php/"                  => '<?php ',
            "/\n([\S])/"                => '$1',
            "/\n/"                      => ' ',
            // "/\r/"                      => '', -- Комментируем этот параметр
            "/\t/"                      => '',
            "/ +/"                      => ' '
        ];

        $buffer = preg_replace(array_keys($replace), array_values($replace), $buffer);
        $response->setContent($buffer);
        return $response;
    }

function isValidEmail($email){ 
    return filter_var($email, FILTER_VALIDATE_EMAIL) !== false;
}

$bool = isValidEmail($_POST['email']);

$routes = array(
            'home' => array('url' => 'home.php'),
            'about_us' => array('url' => 'about_us.php'),
            'tours' => array('url' => 'tours.php')
        );

$db = new PDO('mysql:host=myhost;dbname=mydb', 'login', 'password', array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\'')); 


//Еще один вариант

try
{
    $db = new pdo('mysql:host=localhost;port=3306;dbname=mysql;charset=utf8','user','password',array(
        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    ));
    }catch(PDOException $pe){
        echo $pe->getMessage();
    }

//One
$result = $db->query("SELECT COUNT(*) AS count FROM `table` WHERE `id` = '1'");
$row = $result->fetch_row();
echo '#: ', $row[0];

//Two
$result = $db->query("SELECT id FROM `table` WHERE `id` = '1'");

echo $result->num_rows;

class autoload
{
    private $_fileExtension = '.php';
    private $_namespace;
    private $_includePath;
    private $_namespaceSeparator = '\\';

    public function __construct($ns = null, $includePath = null)
    {
        $this->_namespace = $ns;
        $this->_includePath = $includePath;
    }

    public function setNamespaceSeparator($sep)
    {
        $this->_namespaceSeparator = $sep;
    }

    public function getNamespaceSeparator()
    {
        return $this->_namespaceSeparator;
    }

    public function setIncludePath($includePath)
    {
        $this->_includePath = $includePath;
    }
    public function getIncludePath()
    {
        return $this->_includePath;
    }

    public function setFileExtension($fileExtension)
    {
        $this->_fileExtension = $fileExtension;
    }
    public function getFileExtension()
    {
        return $this->_fileExtension;
    }

    public function register()
    {
        spl_autoload_register(array($this, 'loadClass'));
    }

    public function unregister()
    {
        spl_autoload_unregister(array($this, 'loadClass'));
    }

    public function loadClass($className)
    {
        if (null === $this->_namespace || $this->_namespace.$this->_namespaceSeparator === substr($className, 0, strlen($this->_namespace.$this->_namespaceSeparator))) {
            $fileName = '';
            $namespace = '';
            if (false !== ($lastNsPos = strripos($className, $this->_namespaceSeparator))) {
                $namespace = substr($className, 0, $lastNsPos);
                $className = substr($className, $lastNsPos + 1);
                $fileName = str_replace($this->_namespaceSeparator, DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
            }
            $fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . $this->_fileExtension;

            require ($this->_includePath !== null ? $this->_includePath . DIRECTORY_SEPARATOR : '') . $fileName;
        }
    }
}

$autoload = new autoload('library', \ROOT.'/core');
$autoload->register();