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LOCK FILE PHP 无法读取吗?
原标题:LOCK FILE PHP for read then cannot be read?

我正在锁定文件,但当我读到文件时......我不能,我的代码...

// ACQUIRE READ LOCK
if(flock($file, LOCK_SH)) {
// READ HASHES FILE
if($contents = file( haasdas.txt )) {
    // RELEASE READ LOCK
    flock($file, LOCK_UN);
} else {
            echo  errrrrrorzzzer ;
      }
}

这是怎么回事?

问题回答

作为的“https://www.php.net/manual/en/flock.php” rel=“nofollown noreferrer”>docs 提及,flock () 在文件名上不是工作,而是在文件描述符上工作:

$fd=fopen($filename, rb );
while (!flock($fd,LOCK_SH)) usleep(500);
$fs=fstat($fd);
$contents=fread($fd,$fs[ size ]);
flock($fd,LOCK_UN);
fclose($fd);

将错误处理作为一项练习留待阅读器...





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