<?php

ob_start();

session_start();

$num=0;

$dirpt="online";

$reftime=1;

if (is_dir($dirpt) && $dir = opendir($dirpt)) {

while (($file = readdir($dir)) !== false) {

if(strcmp($file,"..")==0 || strcmp($file,".")==0){

continue;

}

$D_[date("Y-m-d H:i:s",filemtime($dirpt."/".$file))]=$file;

$num++;

unset($cum);

}

closedir($dir);

$filename=session_id();

$fp=fopen($dirpt."/".$filename,"w");

fputs($fp,"");

fclose($fp);

$ntime=date("Y-m-d H:i:s",mktime(date("H"),date("i")-1,0,date("m"),date("d"),date("Y")));

$D_[$ntime]="-";

krsort($D_);

$onlinenumber=0;

while(1){

$vkey=key($D_);

$onlinenumber++;

if(strcmp($ntime,$vkey)==0){

break;

}else{

array_shift($D_);

}

}

array_shift($D_);

reset($D_);

while(count($D_)>0){

$ckey=key($D_);

unlink($dirpt."/".$D_[$ckey]);

if(!next($D_)){

break;

}

}

}else{

@chmod("..",0777);

@mkdir($dirpt,0777);

}

$online=$onlinenumber-1;

$retime=60*$reftime;

echo "当前在线<strong><font color=red>$online</font></strong>人<meta http-equiv=refresh content="{$retime},url=">";

ob_end_flush();

?>

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