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PHP ɾ³ýij¸öĿ¼ÏÂNÌìǰµÄËùÓÐÎļþ

<?php
function delfile($dir,$n) //ɾ³ýDIR·¾¶ÏÂNÌìǰ´´½¨µÄËùÓÐÎļþ;
{
if(is_dir($dir))
{
if($dh=opendir($dir))
{
while (false !== ($file = readdir($dh)))
{
if($file!="." && $file!="..")
{
$fullpath=$dir."/".$file;
if(!is_dir($fullpath))
{
$filedate=date("Y-m-d", filemtime($fullpath));
$d1=strtotime(date("Y-m-d"));
$d2=strtotime($filedate);
$Days=round(($d1-$d2)/3600/24);
if($Days>$n)
unlink($fullpath); ////ɾ³ýÎļþ

}
}
}
}
closedir($dh);
}
}
?>


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{
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echo "hello world!";
}

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