How to send group mail in objective c using php?

tooltip: {
 formatter: function() {
 var s = '<b>สัปดาห์ที่ '+ this.x +' วันที่ </b><table>';
 sum = 0;
 $.each(this.points, function(i, point) {
 s += '<tr style=\"color:' + point.series.color + '\"><td>'+ point.series.name +
 ' : <td style=\"text-align: right \">' + point.y + ' ไร่</tr>';
 sum = sum + point.y; 
 });
 s +='<tr><td><b>รวม :</b></td><td style=\"text-align: right \"><b>' + sum + ' ไร่</b></tr></table>';
 return s;
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