Unnamed

<?php// This is a static var just to state where your cache dir will beImport::$cache_dir = dirname(__FILE__).'/import_cache/';// Usage of imports ex: $math = import('math.php'); echo $math->square(3);class ImportCacheError extends Exception {}class ImportFileError extends Exception {}class ImportAttributeError extends Exception {}function import($file) {	static $imported = array();	if (!isset($imported[$file])) {		try {			$imported[$file] = new Import($file);		}		catch (ImportFileError $e) {			return false;		}	}	return $imported[$file];}class Import {	static $cache_dir;	public $__variables__,	$__functions__,	$__classes__,	$__file__,	$__cache_file__,	$__cached__,	$__cached_filemtime__,	$__filemtime__;	function __construct($file) {		$this->__file__ = $file;		if (!is_file($file)) {			throw new ImportFileError('File "'.$file.'" not found for import.');		}		if (!is_writeable(Import::$cache_dir)) {			throw new ImportCacheError('Cannot write to "'.Import::$cache_dir.'"');		}		$this->__filemtime__ = filemtime($file);		$this->__cache_file__ = Import::$cache_dir.md5($file).'.php';		$this->__cached__ = is_file($this->__cache_file__) ? true : false;		if ($this->__cached__) {			$this->__loadCache__();			if ($this->__cached_filemtime__ != $this->__filemtime__) {				$this->__reloadImport__();				$this->__saveCache__();			}			else {				$this->__loadImport__();			}		}		else {			$this->__reloadImport__();			$this->__saveCache__();		}	}	public function __call($attr, $args) {		$attr = strtolower($attr);		if (in_array($attr, $this->__functions__)) {			return call_user_func_array($attr, $args);		}		elseif (in_array($attr, $this->__classes__)) {			return $attr;		}		else {			throw new ImportAttributeError('Import has no "'.$attr.'" attribute.');		}	}	public function __get($attr) {		if (isset($this->__variables__[$attr])) {			return $this->__variables__[$attr];		}		elseif (in_array(strtolower($attr), $this->__classes__)) {			return $attr;		}		else {			throw new ImportAttributeError('Import has no "'.$attr.'" attribute.');		}	}	private function __reloadImport__() {		$this->pre_vars = get_defined_vars();		$this->pre_funcs = get_defined_functions();		$this->pre_funcs = $this->pre_funcs['user'];		$this->pre_classes = get_declared_classes();		include $this->__file__;		$this->__variables__ = array_slice(get_defined_vars(), count($this->pre_vars));		$this->post_funcs = get_defined_functions();		$this->post_funcs = $this->post_funcs['user'];		$this->__functions__ = array_slice($this->post_funcs, count($this->pre_funcs));		$this->__classes__ = array_slice(get_declared_classes(), count($this->pre_classes));		unset($this->pre_vars, $this->pre_funcs, $this->pre_classes, $this->post_funcs);	}	private function __loadCache__() {		$cache = include $this->__cache_file__;		$this->__classes__ = $cache['classes'];		$this->__functions__ = $cache['functions'];		$this->__cached_filemtime__ = $cache['filemtime'];	}	private function __loadImport__() {		$this->pre_vars = get_defined_vars();		include $this->__file__;		$this->__variables__ = array_slice(get_defined_vars(), count($this->pre_vars) - 1);		unset($this->pre_vars);	}	private function __saveCache__() {		$cache = '<?php return array(\'functions\' => '.				var_export($this->__functions__, true).','.				'\'classes\' => '.var_export($this->__classes__, true).',				\'filemtime\' => '.filemtime($this->__file__).'); ?>';		file_put_contents($this->__cache_file__, $cache);	}}?>