php mvc 自动加载文件,PHP 自动加载对象（以MVC框架替例）
Setup the application class paths (PHP 'include_path') for the included
* class files, for the duration of the main script
*
*
Returns the class path string for testing purposes
*
* @depreciated
* @param stringThe appServerRootDir. eg: 'C:/Www/phpmvc'
* @param arrayAn array of sub-application paths,
* eg: $subAppPaths[] = 'WEB-INF/classes/example';, ...
* @param stringThe OS [Optional] [UNIX|WINDOWS|MAC|...] if we have
* trouble detecting the server OS type. Eg: path errors.
* @public
* @returns string
*/
function setClassPath($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 $classPath;// for testing
}
/**
* Concatenate environment path strings
*
* Returns the two path strings joined with the correct environment
* string delimiter for the host operating system.
*
* @paramstringThe path string
* @paramstringThe path string
* @paramstringThe operating type [optional]
* @public
* @returnsstring
*/
function concatPaths($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 $path;
}
// ----- Protected Methods ---------------------------------------------- //
/**
* Get environment path delimiter.
*
* Returns the environment string delimiter for the host operating system.
*
* @paramstringThe operating type [optional]
* @protected
* @returnsstring
*/
function getPathDelimiter($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 $delim;
}
/**
* Check if the specified system path is an absolute path. Absolute system
* paths start with a "/" on Unix, and "Ch\:" or "Ch/:" on Win 32.
* Eg: "/Some/Unix/Path/" or "D:\Some\Win\Path" or "D:/Some/Win/Path".
*
* Returns True if the suppplied path absolute, otherwise returns False
*
* @param stringThe path to check, like: "/Some/Unix/Path/" or
*"D:\Some\Win\Path".
* @public
* @returns boolean
*/
function absolutePath($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;
}
}
?>