Kohana_Core
Contains the most low-level helpers methods in Kohana:
- Environment initialization
- Locating files within the cascading filesystem
- Auto-loading and transparent extension of classes
- Variable and path debugging
Constants
Properties
Constants
-
VERSION
string(5) "3.3.9"
-
CODENAME
string(9) "karlsruhe"
-
PRODUCTION
integer 10
-
STAGING
integer 20
-
TESTING
integer 30
-
DEVELOPMENT
integer 40
-
FILE_CACHE
string(26) ":header // :name :data "
Properties
-
public static string $base_url
-
base URL to the application
-
string(1) "/"
-
public static string $cache_dir
-
Cache directory, used by Kohana::cache. Set by Kohana::init
-
NULL
-
public static integer $cache_life
-
Default lifetime for caching, in seconds, used by Kohana::cache. Set by Kohana::init
-
integer 60
-
public static boolean $caching
-
Whether to use internal caching for Kohana::find_file, does not apply to Kohana::cache. Set by Kohana::init
-
bool FALSE
-
public static string $charset
-
character set of input and output
-
string(5) "utf-8"
-
public static Config $config
-
config object
-
NULL
-
public static string $content_type
-
string(9) "text/html"
-
public static string $environment
-
Current environment name
-
integer 40
-
public static boolean $errors
-
Enable Kohana catching and displaying PHP errors and exceptions. Set by Kohana::init
-
bool TRUE
-
public static boolean $expose
-
set the X-Powered-By header
-
bool FALSE
-
public static array $hostnames
-
list of valid host names for this instance
-
array(0)
-
public static string $index_file
-
Application index file, added to links generated by Kohana. Set by Kohana::init
-
string(9) "index.php"
-
public static boolean $is_windows
-
True if Kohana is running on windows
-
bool FALSE
-
public static Log $log
-
logging object
-
NULL
-
public static boolean $profiling
-
Whether to enable profiling. Set by Kohana::init
-
bool TRUE
-
public static string $server_name
-
the name of the server Kohana is hosted upon
-
string(0) ""
-
public static array $shutdown_errors
-
Types of errors to display at shutdown
-
array(3) ( 0 => integer 4 1 => integer 1 2 => integer 256 )
-
protected static array $_files
-
File path cache, used when caching is true in Kohana::init
-
array(0)
-
protected static boolean $_files_changed
-
Has the file path cache changed during this execution? Used internally when when caching is true in Kohana::init
-
bool FALSE
-
protected static boolean $_init
-
Has Kohana::init been called?
-
bool FALSE
-
protected static array $_modules
-
Currently active modules
-
array(0)
-
protected static array $_paths
-
Include paths that are used to find files
-
array(2) ( 0 => string(40) "C:\xampp\tmp\koseven-master\application\" 1 => string(35) "C:\xampp\tmp\koseven-master\system\" )
Methods
public static auto_load(string $class [, string $directory = string(7) "classes" ] ) (defined in Kohana_Core)
Provides auto-loading support of classes that follow Kohana's class naming conventions. See Loading Classes for more information.
// Loads classes/My/Class/Name.php
Kohana::auto_load('My_Class_Name');
or with a custom directory:
// Loads vendor/My/Class/Name.php
Kohana::auto_load('My_Class_Name', 'vendor');
You should never have to call this function, as simply calling a class will cause it to be called.
This function must be enabled as an autoloader in the bootstrap:
spl_autoload_register(array('Kohana', 'auto_load'));
Parameters
- string $class required - Class name
- string $directory = string(7) "classes" - Directory to load from
Return Values
- boolean
Source Code
public static function auto_load($class, $directory = 'classes')
{
// Transform the class name according to PSR-0
$class = ltrim($class, '\\');
$file = '';
$namespace = '';
if ($last_namespace_position = strripos($class, '\\'))
{
$namespace = substr($class, 0, $last_namespace_position);
$class = substr($class, $last_namespace_position + 1);
$file = str_replace('\\', DIRECTORY_SEPARATOR, $namespace).DIRECTORY_SEPARATOR;
}
$file .= str_replace('_', DIRECTORY_SEPARATOR, $class);
if ($path = Kohana::find_file($directory, $file))
{
// Load the class file
require $path;
// Class has been found
return TRUE;
}
// Class is not in the filesystem
return FALSE;
}
public static auto_load_lowercase(string $class [, string $directory = string(7) "classes" ] ) (defined in Kohana_Core)
Provides auto-loading support of classes that follow Kohana's old class naming conventions.
This is included for compatibility purposes with older modules.
Parameters
- string $class required - Class name
- string $directory = string(7) "classes" - Directory to load from
Return Values
- boolean
Source Code
public static function auto_load_lowercase($class, $directory = 'classes')
{
// Transform the class name into a path
$file = str_replace('_', DIRECTORY_SEPARATOR, strtolower($class));
if ($path = Kohana::find_file($directory, $file))
{
// Load the class file
require $path;
// Class has been found
return TRUE;
}
// Class is not in the filesystem
return FALSE;
}
public static cache(string $name [, mixed $data = NULL , integer $lifetime = NULL ] ) (defined in Kohana_Core)
Cache variables using current cache module if enabled, if not uses Kohana::file_cache
// Set the "foo" cache
Kohana::cache('foo', 'hello, world');
// Get the "foo" cache
$foo = Kohana::cache('foo');
Parameters
- string $name required - Name of the cache
- mixed $data = NULL - Data to cache
- integer $lifetime = NULL - Number of seconds the cache is valid for
Tags
Return Values
- mixed - For getting
- boolean - For setting
Source Code
public static function cache($name, $data = NULL, $lifetime = NULL)
{
//in case the Kohana_Cache is not yet loaded we need to use the normal cache...sucks but happens onload
if (class_exists('Kohana_Cache'))
{
//deletes the cache
if ($lifetime===0)
return Cache::instance()->delete($name);
//no data provided we read
if ($data===NULL)
return Cache::instance()->get($name);
//saves data
else
return Cache::instance()->set($name,$data, $lifetime);
}
else
return self::file_cache($name, $data, $lifetime);
}
public static deinit() (defined in Kohana_Core)
Cleans up the environment:
- Restore the previous error and exception handlers
- Destroy the Kohana::$log and Kohana::$config objects
Return Values
- void
Source Code
public static function deinit()
{
if (Kohana::$_init)
{
// Removed the autoloader
spl_autoload_unregister(['Kohana', 'auto_load']);
if (Kohana::$errors)
{
// Go back to the previous error handler
restore_error_handler();
// Go back to the previous exception handler
restore_exception_handler();
}
// Destroy objects created by init
Kohana::$log = Kohana::$config = NULL;
// Reset internal storage
Kohana::$_modules = Kohana::$_files = [];
Kohana::$_paths = [APPPATH, SYSPATH];
// Reset file cache status
Kohana::$_files_changed = FALSE;
// Kohana is no longer initialized
Kohana::$_init = FALSE;
}
}
public static error_handler() (defined in Kohana_Core)
PHP error handler, converts all errors into ErrorExceptions. This handler respects error_reporting settings.
Tags
Return Values
- TRUE
Source Code
public static function error_handler($code, $error, $file = NULL, $line = NULL)
{
if (error_reporting() & $code)
{
// This error is not suppressed by current error reporting settings
// Convert the error into an ErrorException
throw new ErrorException($error, $code, 0, $file, $line);
}
// Do not execute the PHP error handler
return TRUE;
}
public static file_cache(string $name [, mixed $data = NULL , integer $lifetime = NULL ] ) (defined in Kohana_Core)
Provides simple file-based caching for strings and arrays:
// Set the "foo" cache
Kohana::file_cache('foo', 'hello, world');
// Get the "foo" cache
$foo = Kohana::file_cache('foo');
All caches are stored as PHP code, generated with var_export. Caching objects may not work as expected. Storing references or an object or array that has recursion will cause an E_FATAL.
The cache directory and default cache lifetime is set by Kohana::init
Parameters
- string $name required - Name of the cache
- mixed $data = NULL - Data to cache
- integer $lifetime = NULL - Number of seconds the cache is valid for
Tags
Return Values
- mixed - For getting
- boolean - For setting
Source Code
public static function file_cache($name, $data = NULL, $lifetime = NULL)
{
// Cache file is a hash of the name
$file = sha1($name).'.txt';
// Cache directories are split by keys to prevent filesystem overload
$dir = Kohana::$cache_dir.DIRECTORY_SEPARATOR.$file[0].$file[1].DIRECTORY_SEPARATOR;
if ($lifetime === NULL)
{
// Use the default lifetime
$lifetime = Kohana::$cache_life;
}
if ($data === NULL)
{
if (is_file($dir.$file))
{
if ((time() - filemtime($dir.$file)) < $lifetime)
{
// Return the cache
try
{
return unserialize(file_get_contents($dir.$file));
}
catch (Exception $e)
{
// Cache is corrupt, let return happen normally.
}
}
else
{
try
{
// Cache has expired
unlink($dir.$file);
}
catch (Exception $e)
{
// Cache has mostly likely already been deleted,
// let return happen normally.
}
}
}
// Cache not found
return NULL;
}
if ( ! is_dir($dir))
{
// Create the cache directory
mkdir($dir, 0777, TRUE);
// Set permissions (must be manually set to fix umask issues)
chmod($dir, 0777);
}
// Force the data to be a string
$data = serialize($data);
try
{
// Write the cache
return (bool) file_put_contents($dir.$file, $data, LOCK_EX);
}
catch (Exception $e)
{
// Failed to write cache
return FALSE;
}
}
public static find_file(string $dir , string $file [, string $ext = NULL , boolean $array = bool FALSE ] ) (defined in Kohana_Core)
Searches for a file in the Cascading Filesystem, and returns the path to the file that has the highest precedence, so that it can be included.
When searching the "config", "messages", or "i18n" directories, or when
the $array
flag is set to true, an array of all the files that match
that path in the Cascading Filesystem will be returned.
These files will return arrays which must be merged together.
If no extension is given, the default extension (EXT
set in
index.php
) will be used.
// Returns an absolute path to views/template.php
Kohana::find_file('views', 'template');
// Returns an absolute path to media/css/style.css
Kohana::find_file('media', 'css/style', 'css');
// Returns an array of all the "mimes" configuration files
Kohana::find_file('config', 'mimes');
Parameters
- string $dir required - Directory name (views, i18n, classes, extensions, etc.)
- string $file required - Filename with subdirectory
- string $ext = NULL - Extension to search for
- boolean $array = bool FALSE - Return an array of files?
Return Values
- array - A list of files when $array is TRUE
- string - Single file path
Source Code
public static function find_file($dir, $file, $ext = NULL, $array = FALSE)
{
if ($ext === NULL)
{
// Use the default extension
$ext = EXT;
}
elseif ($ext)
{
// Prefix the extension with a period
$ext = ".{$ext}";
}
else
{
// Use no extension
$ext = '';
}
// Create a partial path of the filename
$path = $dir.DIRECTORY_SEPARATOR.$file.$ext;
if (Kohana::$caching === TRUE AND isset(Kohana::$_files[$path.($array ? '_array' : '_path')]))
{
// This path has been cached
return Kohana::$_files[$path.($array ? '_array' : '_path')];
}
if (Kohana::$profiling === TRUE AND class_exists('Profiler', FALSE))
{
// Start a new benchmark
$benchmark = Profiler::start('Kohana', __FUNCTION__);
}
if ($array OR $dir === 'config' OR $dir === 'i18n' OR $dir === 'messages')
{
// Include paths must be searched in reverse
$paths = array_reverse(Kohana::$_paths);
// Array of files that have been found
$found = [];
foreach ($paths as $dir)
{
if (is_file($dir.$path))
{
// This path has a file, add it to the list
$found[] = $dir.$path;
}
}
}
else
{
// The file has not been found yet
$found = FALSE;
foreach (Kohana::$_paths as $dir)
{
if (is_file($dir.$path))
{
// A path has been found
$found = $dir.$path;
// Stop searching
break;
}
}
}
if (Kohana::$caching === TRUE)
{
// Add the path to the cache
Kohana::$_files[$path.($array ? '_array' : '_path')] = $found;
// Files have been changed
Kohana::$_files_changed = TRUE;
}
if (isset($benchmark))
{
// Stop the benchmark
Profiler::stop($benchmark);
}
return $found;
}
public static include_paths() (defined in Kohana_Core)
Returns the the currently active include paths, including the application, system, and each module's path.
Return Values
- array
Source Code
public static function include_paths()
{
return Kohana::$_paths;
}
public static init([ array $settings = NULL ] ) (defined in Kohana_Core)
Initializes the environment:
- Determines the current environment
- Set global settings
- Sanitizes GET, POST, and COOKIE variables
- Converts GET, POST, and COOKIE variables to the global character set
The following settings can be set:
Type | Setting | Description | Default Value |
---|---|---|---|
string |
base_url | The base URL for your application. This should be the relative path from your DOCROOT to your index.php file, in other words, if Kohana is in a subfolder, set this to the subfolder name, otherwise leave it as the default. The leading slash is required, trailing slash is optional. |
"/" |
string |
index_file | The name of the front controller. This is used by Kohana to generate relative urls like HTML::anchor() and URL::base(). This is usually index.php . To remove index.php from your urls, set this to FALSE . |
"index.php" |
string |
charset | Character set used for all input and output | "utf-8" |
string |
cache_dir | Kohana's cache directory. Used by Kohana::cache for simple internal caching, like Fragments and [caching database queries](this should link somewhere). This has nothing to do with the Cache module. | APPPATH."cache" |
integer |
cache_life | Lifetime, in seconds, of items cached by Kohana::cache | 60 |
boolean |
errors | Should Kohana catch PHP errors and uncaught Exceptions and show the error_view . See Error Handling for more info. Recommended setting: TRUE while developing, FALSE on production servers. |
TRUE |
boolean |
profile | Whether to enable the Profiler. Recommended setting: TRUE while developing, FALSE on production servers. |
TRUE |
boolean |
caching | Cache file locations to speed up Kohana::find_file. This has nothing to do with Kohana::cache, Fragments or the Cache module. Recommended setting: FALSE while developing, TRUE on production servers. |
FALSE |
boolean |
expose | Set the X-Powered-By header |
Parameters
- array $settings = NULL - Array of settings. See above.
Tags
Return Values
- void
Source Code
public static function init(array $settings = NULL)
{
if (Kohana::$_init)
{
// Do not allow execution twice
return;
}
// Kohana is now initialized
Kohana::$_init = TRUE;
if (isset($settings['profile']))
{
// Enable profiling
Kohana::$profiling = (bool) $settings['profile'];
}
// Start an output buffer
ob_start();
if (isset($settings['errors']))
{
// Enable error handling
Kohana::$errors = (bool) $settings['errors'];
}
if (Kohana::$errors === TRUE)
{
// Enable Kohana exception handling, adds stack traces and error source.
set_exception_handler(['Kohana_Exception', 'handler']);
// Enable Kohana error handling, converts all PHP errors to exceptions.
set_error_handler(['Kohana', 'error_handler']);
}
/**
* Enable xdebug parameter collection in development mode to improve fatal stack traces.
*/
if (Kohana::$environment == Kohana::DEVELOPMENT AND extension_loaded('xdebug'))
{
ini_set('xdebug.collect_params', 3);
}
// Enable the Kohana shutdown handler, which catches E_FATAL errors.
register_shutdown_function(['Kohana', 'shutdown_handler']);
if (isset($settings['expose']))
{
Kohana::$expose = (bool) $settings['expose'];
}
// Determine if we are running in a Windows environment
Kohana::$is_windows = (DIRECTORY_SEPARATOR === '\\');
if (isset($settings['cache_dir']))
{
if ( ! is_dir($settings['cache_dir']))
{
try
{
// Create the cache directory
mkdir($settings['cache_dir'], 0755, TRUE);
// Set permissions (must be manually set to fix umask issues)
chmod($settings['cache_dir'], 0755);
}
catch (Exception $e)
{
throw new Kohana_Exception('Could not create cache directory :dir',
[':dir' => Debug::path($settings['cache_dir'])]);
}
}
// Set the cache directory path
Kohana::$cache_dir = realpath($settings['cache_dir']);
}
else
{
// Use the default cache directory
Kohana::$cache_dir = APPPATH.'cache';
}
if ( ! is_writable(Kohana::$cache_dir))
{
throw new Kohana_Exception('Directory :dir must be writable',
[':dir' => Debug::path(Kohana::$cache_dir)]);
}
if (isset($settings['cache_life']))
{
// Set the default cache lifetime
Kohana::$cache_life = (int) $settings['cache_life'];
}
if (isset($settings['caching']))
{
// Enable or disable internal caching
Kohana::$caching = (bool) $settings['caching'];
}
if (Kohana::$caching === TRUE)
{
// Load the file path cache
Kohana::$_files = Kohana::cache('Kohana::find_file()');
}
if (isset($settings['charset']))
{
// Set the system character set
Kohana::$charset = strtolower($settings['charset']);
}
if (function_exists('mb_internal_encoding'))
{
// Set the MB extension encoding to the same character set
mb_internal_encoding(Kohana::$charset);
}
if (isset($settings['base_url']))
{
// Set the base URL
Kohana::$base_url = rtrim($settings['base_url'], '/').'/';
}
if (isset($settings['index_file']))
{
// Set the index file
Kohana::$index_file = trim($settings['index_file'], '/');
}
// Sanitize all request variables
$_GET = Kohana::sanitize($_GET);
$_POST = Kohana::sanitize($_POST);
$_COOKIE = Kohana::sanitize($_COOKIE);
// Load the logger if one doesn't already exist
if ( ! Kohana::$log instanceof Log)
{
Kohana::$log = Log::instance();
}
// Load the config if one doesn't already exist
if ( ! Kohana::$config instanceof Config)
{
Kohana::$config = new Config;
}
}
public static list_files([ string $directory = NULL , array $paths = NULL ] ) (defined in Kohana_Core)
Recursively finds all of the files in the specified directory at any location in the Cascading Filesystem, and returns an array of all the files found, sorted alphabetically.
// Find all view files.
$views = Kohana::list_files('views');
Parameters
- string $directory = NULL - Directory name
- array $paths = NULL - List of paths to search
Return Values
- array
Source Code
public static function list_files($directory = NULL, array $paths = NULL)
{
if ($directory !== NULL)
{
// Add the directory separator
$directory .= DIRECTORY_SEPARATOR;
}
if ($paths === NULL)
{
// Use the default paths
$paths = Kohana::$_paths;
}
// Create an array for the files
$found = [];
foreach ($paths as $path)
{
if (is_dir($path.$directory))
{
// Create a new directory iterator
$dir = new DirectoryIterator($path.$directory);
foreach ($dir as $file)
{
// Get the file name
$filename = $file->getFilename();
if ($filename[0] === '.' OR $filename[strlen($filename)-1] === '~')
{
// Skip all hidden files and UNIX backup files
continue;
}
// Relative filename is the array key
$key = $directory.$filename;
if ($file->isDir())
{
if ($sub_dir = Kohana::list_files($key, $paths))
{
if (isset($found[$key]))
{
// Append the sub-directory list
$found[$key] += $sub_dir;
}
else
{
// Create a new sub-directory list
$found[$key] = $sub_dir;
}
}
}
else
{
if ( ! isset($found[$key]))
{
// Add new files to the list
$found[$key] = realpath($file->getPathname());
}
}
}
}
}
// Sort the results alphabetically
ksort($found);
return $found;
}
public static load(string $file ) (defined in Kohana_Core)
Loads a file within a totally empty scope and returns the output:
$foo = Kohana::load('foo.php');
Parameters
- string $file required - $file
Return Values
- mixed
Source Code
public static function load($file)
{
return include $file;
}
public static message(string $file [, string $path = NULL , mixed $default = NULL ] ) (defined in Kohana_Core)
Get a message from a file. Messages are arbitrary strings that are stored
in the messages/
directory and reference by a key. Translation is not
performed on the returned values. See message files
for more information.
// Get "username" from messages/text.php
$username = Kohana::message('text', 'username');
Parameters
- string $file required - File name
- string $path = NULL - Key path to get
- mixed $default = NULL - Default value if the path does not exist
Tags
Return Values
- string - Message string for the given path
- array - Complete message list, when no path is specified
Source Code
public static function message($file, $path = NULL, $default = NULL)
{
static $messages;
if ( ! isset($messages[$file]))
{
// Create a new message list
$messages[$file] = [];
if ($files = Kohana::find_file('messages', $file))
{
foreach ($files as $f)
{
// Combine all the messages recursively
$messages[$file] = Arr::merge($messages[$file], Kohana::load($f));
}
}
}
if ($path === NULL)
{
// Return all of the messages
return $messages[$file];
}
else
{
// Get a message using the path
return Arr::path($messages[$file], $path, $default);
}
}
public static modules([ array $modules = NULL ] ) (defined in Kohana_Core)
Changes the currently enabled modules. Module paths may be relative or absolute, but must point to a directory:
Kohana::modules(array('modules/foo', MODPATH.'bar'));
Parameters
- array $modules = NULL - List of module paths
Return Values
- array - Enabled modules
Source Code
public static function modules(array $modules = NULL)
{
if ($modules === NULL)
{
// Not changing modules, just return the current set
return Kohana::$_modules;
}
// Start a new list of include paths, APPPATH first
$paths = [APPPATH];
foreach ($modules as $name => $path)
{
if (is_dir($path))
{
// Add the module to include paths
$paths[] = $modules[$name] = realpath($path).DIRECTORY_SEPARATOR;
}
else
{
// This module is invalid, remove it
throw new Kohana_Exception('Attempted to load an invalid or missing module \':module\' at \':path\'', [
':module' => $name,
':path' => Debug::path($path),
]);
}
}
// Finish the include paths by adding SYSPATH
$paths[] = SYSPATH;
// Set the new include paths
Kohana::$_paths = $paths;
// Set the current module list
Kohana::$_modules = $modules;
foreach (Kohana::$_modules as $path)
{
$init = $path.'init'.EXT;
if (is_file($init))
{
// Include the module initialization file once
require_once $init;
}
}
return Kohana::$_modules;
}
public static sanitize(mixed $value ) (defined in Kohana_Core)
Recursively sanitizes an input variable:
- Normalizes all newlines to LF
Parameters
- mixed $value required - Any variable
Return Values
- mixed - Sanitized variable
Source Code
public static function sanitize($value)
{
if (is_array($value) OR is_object($value))
{
foreach ($value as $key => $val)
{
// Recursively clean each value
$value[$key] = Kohana::sanitize($val);
}
}
elseif (is_string($value))
{
if (strpos($value, "\r") !== FALSE)
{
// Standardize newlines
$value = str_replace(["\r\n", "\r"], "\n", $value);
}
}
return $value;
}
public static shutdown_handler() (defined in Kohana_Core)
Catches errors that are not caught by the error handler, such as E_PARSE.
Tags
Return Values
- void
Source Code
public static function shutdown_handler()
{
if ( ! Kohana::$_init)
{
// Do not execute when not active
return;
}
try
{
if (Kohana::$caching === TRUE AND Kohana::$_files_changed === TRUE)
{
// Write the file path cache
Kohana::cache('Kohana::find_file()', Kohana::$_files);
}
}
catch (Exception $e)
{
// Pass the exception to the handler
Kohana_Exception::handler($e);
}
if (Kohana::$errors AND $error = error_get_last() AND in_array($error['type'], Kohana::$shutdown_errors))
{
// Clean the output buffer
ob_get_level() AND ob_clean();
// Fake an exception for nice debugging
Kohana_Exception::handler(new ErrorException($error['message'], $error['type'], 0, $error['file'], $error['line']));
// Shutdown now to avoid a "death loop"
exit(1);
}
}
public static version() (defined in Kohana_Core)
Generates a version string based on the variables defined above.
Return Values
- string
Source Code
public static function version()
{
return 'Koseven '.Kohana::VERSION.' ('.Kohana::CODENAME.')';
}