[李景山php]每天laravel-20161031|Compiler.php

<?phpnamespace Illuminate\View\Compilers;use Illuminate\Filesystem\Filesystem;abstract class Compiler{// a abstract class    /**     * The Filesystem instance.     *     * @var \Illuminate\Filesystem\Filesystem     */    protected $files;//The filesystem instance.    /**     * Get the cache path for the compiled views.     *     * @var string     */    protected $cachePath;//Get the cache path for the compiled views.    /**     * Create a new compiler instance.     *     * @param  \Illuminate\Filesystem\Filesystem  $files     * @param  string  $cachePath     * @return void     */    public function __construct(Filesystem $files, $cachePath)    {        $this->files = $files;        $this->cachePath = $cachePath;    }//_construct    // files    // set some construct    /**     * Get the path to the compiled version of a view.     *     * @param  string  $path     * @return string     */    public function getCompiledPath($path)    {        return $this->cachePath.'/'.sha1($path).'.php';    }// get The Compiled Path    /**     * Determine if the view at the given path is expired.     *     * @param  string  $path     * @return bool     */    public function isExpired($path)    {// check is expired        $compiled = $this->getCompiledPath($path);// compiled        // If the compiled file doesn't exist we will indicate that the view is expired        // so that it can be re-compiled. Else, we will verify the last modification        // of the views is less than the modification times of the compiled views.        if (! $this->cachePath || ! $this->files->exists($compiled)) {            return true;        }// true        $lastModified = $this->files->lastModified($path);// last Modified        return $lastModified >= $this->files->lastModified($compiled);    }// has this result}