$keyword = '10'; // 0 1.1 1if(preg_match("/^[1-9][0-9]*$/",$keyword)){  echo "是正整數！";   exit();}

if ((floor($jp_total) - $jp_total) !==0){  echo "不是正整數";}else{  echo "是正整數";}

if(!is_numeric($jp_total)||strpos($jp_total,".")!==false){  echo "不是整數";}else{  echo "是整數";}