$filename = "message.txt";
if(isset($_POST['dosubmit'])){
//字段的分隔|| 行的分隔[n]
$mess = "{$_POST['username']}||".time()."||{$_POST['title']}||{$_POST['content']}[n]";
writemessage($filename, $mess);
}
if(file_exists($filename)){
readmessage($filename);
}
//读信息
function readmessage($filename){
// $mess = file_get_contents($filename);
$mess = "";
$fp = fopen($filename, "r");
flock($fp, LOCK_SH+LOCK_NB);//读锁定
while(!feof($fp)){
$mess .=fread($fp, 1024);
}
flock($fp, LOCK_UN+LOCK_NB);//释放锁
$mess = rtrim($mess,"[n]");
$arrmess = explode("[n]", $mess);
foreach($arrmess as $m){
list($username,$daytime,$title,$content) = explode("||", $m);
echo "{$username},".date('Y-m-d H:i:s',$daytime).",{$title}
{$content}
";
}
fclose($fp);
}
//写信息
function writemessage($filename,$mess){
$fp = fopen($filename, "a");
//锁定文件
if(flock($fp, LOCK_EX+LOCK_NB)){
fwrite($fp, $mess);
flock($fp,LOCK_UN+LOCK_NB);//释放文件
}else{
echo '写入锁定失败!';
}
fclose($fp);
}
?>
