- <?php
- class autoloader {
- public static $loader;
- public static function init() {
- if (self::$loader == NULL)
- self::$loader = new self ();
- return self::$loader;
- }
- public function __construct() {
- spl_autoload_register ( array ($this, 'model' ) );
- spl_autoload_register ( array ($this, 'helper' ) );
- spl_autoload_register ( array ($this, 'controller' ) );
- spl_autoload_register ( array ($this, 'library' ) );
- }
- public function library($class) {
- set_include_path ( get_include_path () . PATH_SEPARATOR . '/lib/' );
- spl_autoload_extensions ( '.library.php' );
- spl_autoload ( $class );
- }
- public function controller($class) {
- $class = preg_replace ( '/_controller$/ui', '', $class );
- set_include_path ( get_include_path () . PATH_SEPARATOR . '/controller/' );
- spl_autoload_extensions ( '.controller.php' );
- spl_autoload ( $class );
- }
- public function model($class) {
- $class = preg_replace ( '/_model$/ui', '', $class );
- set_include_path ( get_include_path () . PATH_SEPARATOR . '/model/' );
- spl_autoload_extensions ( '.model.php' );
- spl_autoload ( $class );
- }
- public function helper($class) {
- $class = preg_replace ( '/_helper$/ui', '', $class );
- set_include_path ( get_include_path () . PATH_SEPARATOR . '/helper/' );
- spl_autoload_extensions ( '.helper.php' );
- spl_autoload ( $class );
- }
- }
- //call
- autoloader::init ();
- ?>
1, 在程序使用未声明的类时会自动调用 __autolaod() 函数来加载;
- <?php
- function __autoload($class_name) {
- @require $class_name . '.php';
- }
- ?>
2.其中 spl_autoload_register() 用来注册一个自动调用的函数, 可以注册多个函数!
3.$iniPath = ini_get('include_path');ini_set('include_path', $iniPath. . $cPath);通过设置环境变量来达到autoload目的,设置包含路径,以后可以直接包含这些目录中的文件,不需要再写详细的路径了。方法三取自php.MVC,使用参照php.MVC文档
- <?php
- /*
- * $Header: /PHPMVC/phpmvc-base/WEB-INF/classes/phpmvc/utils/ClassPath.php,v 1.4 2006/02/22 07:18:26 who Exp $
- * $Revision: 1.4 $
- * $Date: 2006/02/22 07:18:26 $
- */
- class ClassPath {
- // ----- Depreciated ---------------------------------------------------- //
- /**
- * <p>Setup the application class paths (PHP 'include_path') for the included
- * class files, for the duration of the main script</p>
- *
- *<p>Returns the class path string for testing purposes
- *
- * @depreciated
- * @param string The appServerRootDir. eg: 'C:/Www/phpmvc'
- * @param array An array of sub-application paths,<br>
- * eg: $subAppPaths[] = 'WEB-INF/classes/example';, ...
- * @param string The OS [Optional] [UNIX|WINDOWS|MAC|...] if we have
- * trouble detecting the server OS type. Eg: path errors.
- * @public
- * @returns string
- */
- function setClassPath($appServerRootDir='', $subAppPaths='', $osType='') {
- // Set AppServer root manually for now
- if($appServerRootDir == '') {
- echo 'Error: ClassPath :- No php.MVC application root directory specified';
- exit;
- }
- #$_ENV; // PHP Superglobals !!
- // Setup the main phpmvc application include() directories here
- // Note: could be placed in a n xml config file later !!
- $appDirs = array();
- $appDirs[] = ''; // application root directory
- $appDirs[] = 'lib';
- // Add the sub-application paths, if any
- if(is_array($subAppPaths)) {
- $appDirs = array_merge($appDirs, $subAppPaths);
- }
- // Setup the platform specific path delimiter character
- $delim = NULL; // path delimiter character. (Windows, Unix, Mac!!)
- $winDir = NULL;
- if( (int)phpversion() > 4 ) {
- // PHP 5
- $winDir = $_ENV["windir"]; // See: PHP v.4.1.0 Superglobals
- } else {
- // PHP 4
- global $HTTP_ENV_VARS; // depreciated-
- if( array_key_exists("windir", $HTTP_ENV_VARS) ) {
- $winDir = $HTTP_ENV_VARS["windir"]; // will be replaced with $_ENV
- }
- }
- if($osType != '') {
- if( eregi("WINDOWS", $osType) ) {
- $delim = ';'; // Windows
- } elseif( eregi("UNIX", $osType) ) {
- $delim = ':'; // Unix
- } elseif( eregi("MAC", $osType) ) {
- $delim = ':'; // Mac !!!!!
- }
- }
- if($delim == NULL) {
- if( eregi("WIN", $winDir) ) { // _ENV["C:\\Win2K"]
- $delim = ';'; // Windows
- } else {
- $delim = ':'; // Unix, Mac !!
- }
- }
- // Get the current working directory
- $path = $appServerRootDir;
- // Strip path directories below 'WEB-INF'
- $pathToWebInf = ereg_replace("WEB-INF.*$", '', $path);
- // Replace path backslashes with forward slashes
- // Note: PHP Regular Expressions do not work with backslashes
- $pathToWebInf = str_replace("\\", "/", $pathToWebInf);
- // Drop the trailing slash, if one is present
- $pathToWebInf = ereg_replace("/$", '', $pathToWebInf);
- // Setup the environment path string
- $classPath = NULL;
- foreach($appDirs as $appDir) {
- $classPath .= $pathToWebInf.'/'.$appDir.$delim;
- }
- // Remove trailing delimiter character
- $classPath = substr($classPath, 0, -1);
- // Setup the include_path for the duration of the main php.MVC script
- ini_set('include_path', $classPath);
- return $classPath; // for testing
- }
- // ----- Public Methods ------------------------------------------------- //
- function getClassPath($appServerRootDir='', $appDirs, $osType='') {
- // Set AppServer root manually for now
- if($appServerRootDir == '') {
- echo 'Error: ClassPath :- No php.MVC application root directory specified';
- exit;
- }
- #$_ENV; // PHP Superglobals !!
- // Setup the platform specific path delimiter character
- $delim = NULL; // path delimiter character. (Windows, Unix, Mac!!)
- if($osType == '') {
- // PHP's build in constant "PATH_SEPARATOR" [unix (:) / win (;)]
- $delim = PATH_SEPARATOR;
- } else {
- // It is handy to be able to specift the OS type for testing
- $delim = ClassPath::getPathDelimiter($osType);
- }
- // Get the current working directory
- $path = $appServerRootDir;
- // Strip path directories below 'WEB-INF'
- $pathToWebInf = ereg_replace("WEB-INF.*$", '', $path);
- // Replace path backslashes with forward slashes
- // Note: PHP Regular Expressions do not work with backslashes
- $pathToWebInf = str_replace("\\", "/", $pathToWebInf);
- // Drop the trailing slash, if one is present
- $pathToWebInf = ereg_replace("/$", '', $pathToWebInf);
- // Setup the environment path string
- $classPath = NULL;
- $AbsolutePath = False; // Say: "/Some/Unix/Path/" or "D:\Some\Win\Path"
- foreach($appDirs as $appDir) {
- // Check if the specified system path is an absolute path. Absolute system
- // paths start with a "/" on Unix, and "Ch\:" or "Ch/:" on Win 32.
- // Eg: "/Some/Unix/Path/" or "D:\Some\Win\Path" or "D:/Some/Win/Path".
- $AbsolutePath = ClassPath::absolutePath($appDir);
- if($AbsolutePath == True) {
- $classPath .= $appDir.$delim;
- } else {
- $classPath .= $pathToWebInf.'/'.$appDir.$delim;
- }
- }
- // Remove trailing delimiter character
- $classPath = substr($classPath, 0, -1);
- return $classPath; // for testing
- }
- /**
- * Concatenate environment path strings
- * <p>
- * Returns the two path strings joined with the correct environment
- * string delimiter for the host operating system.
- *
- * @param string The path string
- * @param string The path string
- * @param string The operating type [optional]
- * @public
- * @returns string
- */
- function concatPaths($path1, $path2, $osType='') {
- // Setup the platform specific path delimiter character
- $delim = NULL; // path delimiter character. (Windows, Unix, Mac!!)
- $delim = ClassPath::getPathDelimiter($osType);
- $path = $path1 . $delim . $path2;
- return $path;
- }
- // ----- Protected Methods ---------------------------------------------- //
- /**
- * Get environment path delimiter.
- * <p>
- * Returns the environment string delimiter for the host operating system.
- *
- * @param string The operating type [optional]
- * @protected
- * @returns string
- */
- function getPathDelimiter($osType='') {
- // Setup the platform specific path delimiter character
- $delim = NULL; // path delimiter character. (Windows, Unix, Mac!!)
- $winDir = NULL;
- if( (int)phpversion() > 4 ) {
- // PHP 5
- $winDir = $_ENV["windir"]; // See: PHP v.4.1.0 Superglobals
- } else {
- // PHP 4
- global $HTTP_ENV_VARS; // depreciated-
- if( array_key_exists("windir", $HTTP_ENV_VARS) ) {
- $winDir = $HTTP_ENV_VARS["windir"]; // will be replaced with $_ENV
- }
- }
- if($osType != '') {
- if( eregi("WINDOWS", $osType) ) {
- $delim = ';'; // Windows
- } elseif( eregi("UNIX", $osType) ) {
- $delim = ':'; // Unix
- } elseif( eregi("MAC", $osType) ) {
- $delim = ':'; // Mac !!!!!
- }
- }
- if($delim == NULL) {
- if( eregi("WIN", $winDir) ) { // _ENV["C:\\Win2K"]
- $delim = ';'; // Windows
- } else {
- $delim = ':'; // Unix, Mac !!
- }
- }
- return $delim;
- }
- /**
- * Check if the specified system path is an absolute path. Absolute system
- * paths start with a "/" on Unix, and "Ch\:" or "Ch/:" on Win 32.
- * Eg: "/Some/Unix/Path/" or "D:\Some\Win\Path" or "D:/Some/Win/Path".
- *
- * Returns True if the suppplied path absolute, otherwise returns False
- *
- * @param string The path to check, like: "/Some/Unix/Path/" or
- * "D:\Some\Win\Path".
- * @public
- * @returns boolean
- */
- function absolutePath($systemPath) {
- // Say: "/Some/Unix/Path/" or "D:\Some\Win\Path" or "D:/Some/Win/Path"
- $fAbsolutePath = False; // Boolean flag value
- //"[/]Some/Unix/Path/"
- if (preg_match("/^\//", $systemPath)) {
- $fAbsolutePath = True;
- //"[D:\]Some\Win\Path"
- // "i" says "ignore case"
- // Note the extra escape "\" reqd for this to work with PHP !!!
- } elseif(preg_match("/^[a-z]:\\\/i", $systemPath)) {
- $fAbsolutePath = True;
- //"[D:/]Some/Win/Path"
- } elseif(preg_match("/^[a-z]:\//i", $systemPath)) {
- $fAbsolutePath = True;
- }
- return $fAbsolutePath;
- }
- }
- ?>
- <?php
- /*
- * $Header: oohforms/WEB-INF/ModulePaths.php
- * $Revision:
- * $Date: 2003.04.22
- *
- * ====================================================================
- * The module paths
- *
- * @author John C Wildenauer
- * @version
- * @public
- */
- class ModulePaths {
- /**
- * Return an array of global paths
- *
- * @public
- * @returns array
- */
- function getModulePaths() {
- // Setup the main module include() directories here
- // Note: could be placed in an xml config file later !!
- $appDirs = array();
- $appDirs[] = ''; // starting with the sub-application home directory
- $appDirs[] = 'login';
- $appDirs[] = 'login/classes';
- $appDirs[] = 'login/tpl';
- $appDirs[] = 'project';
- $appDirs[] = 'project/classes';
- $appDirs[] = 'project/tpl';
- return $appDirs;
- }
- }
- ?>
调用方法autoloader.php
- <?php
- // Set the application path
- $moduleRootDir = 'D:/workspace/eh_plat_wms/dev_src'; // no trailing slash
- // Set the OS Type [Optional] [UNIX|WINDOWS|MAC] if we have
- // trouble detecting the server OS type. Eg: path errors.
- $osType = 'WINDOWS';
- // Setup application class paths first
- include 'lib/ClassPath.php';
- // Setup the module paths
- include 'config/ModulePaths.php';
- $modulePaths = ModulePaths::getModulePaths();
- $mPath = ClassPath::getClassPath($moduleRootDir,$modulePaths, $osType);
- // Retrieve and merge the php.ini path settings
- $iniPath = ini_get('include_path');
- $cPath = ClassPath::concatPaths($mPath, $iniPath, $osType);
- echo $cPath;
- // And set the 'include_path' variables, as used by the file functions
- ini_set('include_path', $cPath);
- ?>
时间: 2024-10-02 17:39:25