miniMVC/sys/common.php

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<?php
/**
* File including common framework-wide functions
*/
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/**
* Function to run on script shutdown
* -used to catch most fatal errors, and
* display them cleanly
*/
function shutdown()
{
// Catch the last error
$error = error_get_last();
// types of errors that are fatal
$fatal = array(E_ERROR, E_PARSE, E_RECOVERABLE_ERROR);
// Display pretty error page
if(in_array($error['type'], $fatal))
{
$file = str_replace(BASE_PATH, "", $error['file']);
$err_msg = <<<TXT
<h2>Fatal Error: </h2>
{$error['message']}<br /><br />
<strong>File:</strong> {$file}<br /><br />
<strong>Line:</strong> {$error['line']}
TXT;
show_error($err_msg);
}
}
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/**
* Function to search through the tree to find the necessary file
*
* @param string $file
* @param string $curr_path
* @return void
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*/
function load_file($file, $curr_path="")
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{
$path = "";
if($curr_path === "app")
{
$path = APP_PATH."{$file}.php";
}
else if($curr_path === "sys")
{
$path = SYS_PATH."{$file}.php";
}
else
{
$path = MOD_PATH."{$curr_path}/{$file}.php";
}
if(is_file($path))
{
require_once($path);
}
}
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// --------------------------------------------------------------------------
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/**
* Custom error handler
*/
function on_error($severity, $message, $filepath, $line, $context)
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{
$levels = array(
E_ERROR => 'Error',
E_WARNING => 'Warning',
E_PARSE => 'Parsing Error',
E_NOTICE => 'Notice',
E_CORE_ERROR => 'Core Error',
E_CORE_WARNING => 'Core Warning',
E_COMPILE_ERROR => 'Compile Error',
E_COMPILE_WARNING => 'Compile Warning',
E_USER_ERROR => 'User Error',
E_USER_WARNING => 'User Warning',
E_USER_NOTICE => 'User Notice',
E_STRICT => 'Strict Error'
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);
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//Make it prettier
$message = highlight_string($message, TRUE);
$filepath = str_replace(BASE_PATH, "", $filepath);
$severity = (isset($levels[$severity])) ? $levels[$severity] : $severity;
// Contain the content for buffering
ob_start();
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include(APP_PATH.'/errors/error_php.php');
$buffer = ob_get_contents();
ob_end_clean();
echo $buffer;
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}
// --------------------------------------------------------------------------
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/**
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* Custom exception handlererror_get_last
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*/
function on_exception($exception)
{
$message = $exception->getMessage();
//$filepath = str_replace(BASE_PATH, "", $filepath);
// Contain the content for buffering
ob_start();
include(APP_PATH.'/errors/error_php_exception.php');
$buffer = ob_get_contents();
ob_end_clean();
echo $buffer;
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}
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// --------------------------------------------------------------------------
/**
* General 404 function
*/
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function show_404()
{
@header('HTTP/1.1 404 Not Found', TRUE, 404);
die('<h1>404 Not Found</h1>');
}
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// --------------------------------------------------------------------------
/**
* Fatal Error page function
*
* @param string $message
* @param int $status_code
*/
function show_error($message, $status_code=null)
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{
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if( ! is_null($status_code))
{
@header("HTTP/1.1 {$status_code}", TRUE, (int)$status_code);
}
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// Contain the content for buffering
ob_start();
include(APP_PATH.'/errors/error_general.php');
$buffer = ob_get_contents();
ob_end_clean();
die($buffer);
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}
// --------------------------------------------------------------------------
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/**
* Returns routable methods for the specified controller class
*
* @param string $controller
* @return array
*/
function controller_methods($controller)
{
$methods = get_class_methods($controller);
$num = count($methods);
for($i=0; $i < $num; $i++)
{
$skip_methods = array(
'load_file',
'on_error',
'on_exception',
'show_404',
'show_error',
'controller_methods',
'route',
'site_url',
'load_view',
'get_instance',
);
// If the method starts with an underscore, or
// is in the blacklist of methods, it is not callable
if($methods[$i]{0} === "_" || in_array($methods[$i], $skip_methods))
{
unset($methods[$i]);
}
}
return $methods;
}
// --------------------------------------------------------------------------
/**
* Calls the appropriate module/controller/function based on the url
*/
function route()
{
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$pi = (isset($_SERVER['PATH_INFO'])) ? $_SERVER['PATH_INFO'] : null;
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// Load the routes config file
$routes = require_once(APP_PATH.'config/routes.php');
// Set the default route
$module = $routes['default_module'];
$controller = $routes['default_controller'];
$func = "index";
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$route_set = FALSE;
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// If it isn't the index page
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if( ! empty($pi) && $pi !== "/")
{
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//Remove trailing slash and begining slash
$pi = trim($pi, '/');
// URL matches the route exactly? Cool, that was easy
if(isset($routes[$pi]))
{
list($module, $controller, $func) = explode("/", $routes[$pi]);
$route_set = TRUE;
}
else
{
$custom_routes = $routes;
// Skip required routes
unset($custom_routes['default_module']);
unset($custom_routes['default_controller']);
unset($custom_routes['404_handler']);
foreach($custom_routes as $uri => $map)
{
if(preg_match("`{$uri}`i", $pi))
{
list($module, $controller, $func) = explode("/", $map);
$route_set = TRUE;
break;
}
}
}
// Doesn't match a predefined route?
// Match on module/controller/method, controller/method, or method
if( ! $route_set)
{
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$num_segments = 0;
if(strpos($pi, '/') === FALSE && ! empty($pi))
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{
$num_segments = 1;
}
else
{
$segments = explode('/', $pi);
$num_segments = count($segments);
}
if($num_segments === 1)
{
$func = $pi;
}
if($num_segments === 2)
{
list($controller, $func) = $segments;
}
if($num_segments >= 3)
{
list($module, $controller, $func) = $segments;
}
}
}
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$path = MOD_PATH."{$module}/controllers/{$controller}.php";
if(is_file($path))
{
require_once($path);
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// Get the list of valid methods for that controller
$methods = controller_methods($controller);
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if(in_array($func, $methods))
{
$class = new $controller;
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return call_user_func(array($class, $func));
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}
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// Function doesn't exist...404
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show_404();
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die();
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}
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// If it gets here, it's still a 404
show_404();
}
// --------------------------------------------------------------------------
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/**
* Returns a full url from a url segment
*
* @param string $segment
* @return string
*/
function site_url($segment)
{
return $url = BASE_URL . URL_INDEX_FILE . $segment;
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}
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// --------------------------------------------------------------------------
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/**
* Wrapper function to simplify using curl
*
* @param string $url
* @param array $options
* @return mixed
*/
function do_curl($url, $options=array())
{
$cookie = tempnam ("/tmp", "CURLCOOKIE");
$ch = curl_init($url);
//Use the user's User Agent and Cookies
$opts= array(
CURLOPT_USERAGENT => $_SERVER['HTTP_USER_AGENT'],
CURLOPT_COOKIEJAR => $cookie,
CURLOPT_FOLLOWLOCATION => TRUE,
CURLOPT_ENCODING => "",
CURLOPT_RETURNTRANSFER => TRUE,
CURLOPT_AUTOREFERER => TRUE,
CURLOPT_SSL_VERIFYPEER => FALSE,
CURLOPT_CONNECTTIMEOUT => 10,
CURLOPT_TIMEOUT => 10,
CURLOPT_MAXREDIRS => 10,
CURLOPT_PROTOCOLS => array(CURLPROTO_HTTP,CURLPROTO_HTTPS)
);
//Set default options
curl_setopt_array($ch, $opts);
//Set additional options
curl_setopt_array($ch, $options);
return curl_exec($ch);
}
// --------------------------------------------------------------------------
//Set error handlers
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register_shutdown_function('shutdown');
set_error_handler('on_error');
set_exception_handler('on_exception');
// Load Most Common libraries
require_once('miniMVC.php');
require_once('output.php');
require_once('page.php');
require_once('db.php');
//Route to the appropriate function
route();
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// End of common.php