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HomeBackend DevelopmentPHP TutorialPHP使用ob_start生成html页面的方法_php技巧

本文实例讲述了PHP使用ob_start生成html页面的方法。分享给大家供大家参考。具体方法分析如下:

ob_start([string output_callback])- 打开输出缓冲区

所有的输出信息不在直接发送到浏览器,而是保存在输出缓冲区里面,可选得回调函数用于处理输出结果信息。

ob_end_flush - 结束(发送)输出缓冲区的内容,关闭输出缓冲区

使用output control 函数可以让自由控制脚本中数据的输出,这在我们想在header之前输出时很有用。
 

复制代码 代码如下:
  ob_start(); //打开缓冲区
  echo "输出n"; //输出
  header("头部信息");
  ob_end_flush();//输出全部内容到浏览器
?>

  
个人使用ob多数是在生成静态html的时候,当某个页面不会再刷新,当其他的用户再次浏览此页面时,程序将不会再调用php以及相关的数据库教程。这时候使用ob生成html就是很好的做法。
复制代码 代码如下:
  ob_start();
  if(@readfile($tem_path)){     //把指定路径中的内容写入缓存中。如果不存在返回false(就是某个你想转换成html的php文件)
       $content= ob_get_contents(); //得到缓存中的内容
      $fp = fopen("1.html", "w"); //创建一个文件,并打开,准备写入
      fwrite($fp, $content); //把php页面的内容全部写入1.html
  }
   fclose($fp);
  ob_clean();
?>

希望本文所述对大家的PHP程序设计有所帮助。

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