$response = array();

$send_status = 0;

$seller_id = 1275;

$re1 = mysql_query("INSERT INTO pos_msg_que(send_status, sid, uid, alert_type, alert_data, send_time) VALUES ('$send_status','$seller_id','$uid','1','mysql_real_escape_string($email_start_message)','$start_time');");

if (!$re1 == 'false') {
  $response['start_email_alert'] =  '1';
} else {
  $response['start_email_alert'] =  '0';
}

$re2 = mysql_query("INSERT INTO pos_msg_que(send_status, sid, uid, alert_type, alert_data, send_time) VALUES ('$send_status','$seller_id','$uid','2','mysql_real_escape_string($sms_start_message)','$start_time');");

if (!$re2 == 'false') {
  $response['start_sms_alert'] =  '1';
} else {
  $response['start_sms_alert'] =  '0';
}

$re3 = mysql_query("INSERT INTO pos_msg_que(send_status, sid, uid, alert_type, alert_data, send_time) VALUES ('$send_status','$seller_id','$uid','3','mysql_real_escape_string($email_end_message)','$end_time');");

if (!$re3 == 'false') {
  $response['end_email_alert'] =  '1';
} else {
  $response['end_email_alert'] =  '0';
}

$re4 = mysql_query("INSERT INTO pos_msg_que(send_status, sid, uid, alert_type, alert_data, send_time) VALUES ('$send_status','$seller_id',  '$uid','4','mysql_real_escape_string($sms_end_message)','$end_time');");

if (!$re4 == 'false') {
  $response['end_sms_alert'] =  '1';
} else {
  $response['end_sms_alert'] =  '0';
}
echo json_encode($response);

+-----------------+------------+------+-----+-------------------+-----------------------------+
| Field           | Type       | Null | Key | Default           | Extra                       |
+-----------------+------------+------+-----+-------------------+-----------------------------+
| id              | int(8)     | NO   | PRI | NULL              | auto_increment              |
| send_status     | int(11)    | NO   |     | NULL              |                             |
| sid             | int(8)     | NO   |     | NULL              |                             |
| uid             | int(8)     | NO   |     | NULL              |                             |
| alert_type      | tinyint(2) | NO   |     | NULL              |                             |
| alert_data      | blob       | NO   |     | NULL              |                             |
| send_time       | datetime   | NO   |     | NULL              |                             |
| advance_time    | int(3)     | NO   |     | NULL              |                             |
| last_attempt_at | timestamp  | NO   |     | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
+-----------------+------------+------+-----+-------------------+-----------------------------+

function cleanStr($str){
  $str = trim($str);
  if($str == "") return;

  $str = stripslashes($str);//STRIP  slashes
  if (function_exists(mysqli_real_escape_string)){
    $str = mysqli_real_escape_string($str);
  }else{
    $str = mysql_real_escape_string($str);
  }
  //CONVERT TO HTML
  $str = htmlspecialchars($str);
  //LAST CLEAN UP
  $str = preg_replace("#'#","",$str);
  return $str;
}