for($i = 1;$i < $n;$i++){
$break = false;
for($j=1;$j<=$m;$j++){
if (strstr($input[$i], substr($Min_len, 0, $j))){
$common_sequence=substr($Min_len, 0, $j);
}else{
$break = true;
break;
}
}
if($break) break;
echo $common_sequence;
echo "
";
}
$input[$j] = $temp;
改成
$input[$j] = $temp;$i=9999;$j=9999;
$input[$j] = $temp;
改成
$input[$j] = $temp;$i=9999;$j=9999;
continue 2;
break 2;
goto语句