PHP向文本文件累加数据

WBOY
Release: 2016-06-13 13:16:15
Original
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PHP向文本文件追加数据
代码如下:  

//一分钟内 php文件 被访问5000次,每次都往文本文件里追加 $word 数据 $word= "ok!";

//请教各位高手,如果不锁定,追加的数据会出错吗,毕竟不是读,只是一个劲的追加数据

  $word= "ok!";

  $fn = 'a2.txt';
  $fp = fopen($fn, 'a');

  flock($fp, LOCK_EX); //锁定文件,避免读写

  fwrite($fp, $word);

  flock($fp, LOCK_UN); //解锁

  fclose($fp); //关闭程序流

如果不影响,那么我就不想锁定了. 期待.....
   



------解决方案--------------------
读的时候加锁(lock_sh),写的时候也进行加锁(lock_ex),这样程序才不会出现问题
------解决方案--------------------
file_put_contents( $fn, $word, LOCK_EX );
------解决方案--------------------
On versions of PHP before 5.3.2, the lock is released also by fclose() (which is also called automatically when script finished). 


fclose()已经包含锁了.
多余的操作!

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source:php.cn
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