PHP cache file entry program_PHP tutorial

class PageCache {

 /**
* @var string $file cache file address
* @access public
*/
 public $file;
 
 /**
* @var int $cacheTime cache time
* @access public
*/
 public $cacheTime = 3600;
 
 /**
* Constructor
* @param string $file cache file address
* @param int $cacheTime cache time
*/
 function __construct($file, $cacheTime = 3600) {
  $this->file = $file;
  $this->cacheTime = $cacheTime;
 }
 
 /**
* Get the cached content
* @param bool Whether to output directly, true to go directly to the cache page, false to return the cached content
* @return mixed
*/
 public function get($output = true) {
  if (is_file($this->file) && (time()-filemtime($this->file))<=$this->cacheTime && !$_GET['nocache']) {
   if ($output) {
    header('location:' . $this->file);
    exit;
   } else {
    return file_get_contents($this->file);
   }
  } else {
   return false;
  }
 }
 
 /**
* Set cache content
* @param $content content html string
*/
 public function set($content) {
  $fp = fopen($this->file, 'w');
  fwrite($fp, $content);
  fclose($fp);
 }
}

http://www.bkjia.com/PHPjc/445011.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/445011.htmlTechArticleclass PageCache { /*** @var string $file cache file address * @access public*/ public $file; /*** @var int $cacheTime cache time * @access public*/ public $cacheTime = 3600;...