PHP/Shell大文件数据统计并且排序

$fp = fopen('qq.txt','w+');
for( $i=0; $i<1000000000; $i++ ){
$str = mt_rand(10000,9999999999)."n";
fwrite($fp,$str);
}
fclose($fp);

$results = array();
foreach( glob('/tmp/qq/*') as $file ){
$fp = fopen($file,'r');
$arr = array();
while( $qq = fgets($fp) ){
$qq = trim($qq);
isset($arr[$qq]) ? $arr[$qq]++ : $arr[$qq]=1;
}
arsort($arr);
//以下处理方式存在问题
do{
$i=0;
foreach( $arr as $qq=>$times ){
if( $i > 10 ){
isset($results[$qq]) ? $results[$qq]+=$times : $results[$qq]=$times;
$i++;
} else {
break;
}
}
} while(false);
fclose($fp);
}
if( $results ){
arsort($results);
do{
$i=0;
foreach( $results as $qq=>$times ){
if( $i > 10 ){
echo $qq . "t" . $times . "n";
$i++;
} else {
break;
}
}
} while(false);
}

awk -F '\@' '{name[$1]++ } END {for (count in name) print name[count],count}' qq.txt |sort -n > 123.txt