view system of MVC framework

view_helper.php

<?php

// Function similar of MVC sistem
function view ( $file , $data = null){
        // IF data different of null and diferrent than array
	if($data!= NULL && !is_array($data)){
                // Erro, expection.
		throw new Exception('Data view isn\'t valid!');
		return false;
	}
	
	$_html_ = ""; // Set a default html vars
	

        // File exists ?!
	if(!file_exists($file)){ 
		// No, so trow new exception
		throw new Exception($file . " file doesn't exists ");
		return false;
	}
	
        // Buffer system are faster and more security than file_get_contents
	ob_start();
                // Extract data
		extract($data);
                // Call the file
		require($file);
		$_html_ = ob_get_contents(); // My content!
	ob_end_clean();
	
	return $_html_; // return html

} 


?>