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$str="\nÕâÊÇÐÂÔöabµÄÄÚÈÝ£¡";
$rootDir=$_SERVER['DOCUMENT_ROOT'];
$filename = $rootDir.'/abc.txt';
$fopen=fopen($filename,'r+b');
/*
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$read = fread($fopen,$fsize);
echo $read;
*/

if(fwrite($fopen,$str))
{
echo 'дÈë³É¹¦£¡';
}else{
echo 'дÈëʧ°Ü£¡';
}


fclose($fopen);
?>


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