PHP Roulette Lottery Interface Example_PHP Tutorial

PHP Roulette Lottery Interface Example

This article mainly introduces the implementation method of the PHP Roulette Lottery interface. The example analyzes the implementation principle of the random lottery interface and the corresponding database operation skills. Friends in need can refer to it

The example in this article describes the implementation method of the PHP carousel lottery interface. Share it with everyone for your reference. The details are as follows:

The carousel lottery here randomly returns a carousel angle, and the probability can be defined by yourself

lottery_get.php interface file is as follows:

The code is as follows:

/*session_start();
if(!isset($_SESSION['zaszh_user_id'])){
echo json_encode(array('status'=>'error','msg'=>'Connection timed out, please reopen the page.'));
exit;
}
$user_id = $_SESSION['zaszh_user_id'];*/

$user_id = 1; // For testing

// Carousel area
$arr_area = array(
'0' => array('min_angle'=>1,'max_angle'=>45,'prize'=>'Xiaomi'),
'1' => array('min_angle'=>46,'max_angle'=>90,'prize'=>'Polaroid'),
'2' => array('min_angle'=>91,'max_angle'=>135,'prize'=>'10 yuan phone fee'),
'3' => array('min_angle'=>136,'max_angle'=>180,'prize'=>'5 yuan phone fee'),
'4' => array('min_angle'=>181,'max_angle'=>225,'prize'=>'Thank you for participating'),
'5' => array('min_angle'=>226,'max_angle'=>270,'prize'=>'Thank you for participating'),
'6' => array('min_angle'=>271,'max_angle'=>315,'prize'=>'Thank you for participating'),
'7' => array('min_angle'=>316,'max_angle'=>360,'prize'=>'Thank you for participating')
);

// Selected area
$area_selected = array();
// Randomly draw
$num_rand = mt_rand(1,10);
switch($num_rand){
// Xiaomi
case 1: $area_selected = $arr_area[0]; break;
// Polaroid
case 2: $area_selected = $arr_area[1]; break;
// 10 yuan phone fee
case 3: $area_selected = $arr_area[2]; break;
// 5 yuan phone fee
case 4: $area_selected = $arr_area[3]; break;
//Thank you for participating
default:
switch(mt_rand(1,4)){
case 1: $area_selected = $arr_area[4]; break;
case 2: $area_selected = $arr_area[5]; break;
case 3: $area_selected = $arr_area[6]; break;
case 4: $area_selected = $arr_area[7]; break;
}
break;
}
echo $area_selected['prize'];

require('connect_database.php');
// Deduct points for answering questions
$mysqli->query("update zaszh_user set answer_points=answer_points-5 where id='{$user_id}' and answer_points>=5");
if($mysqli->affected_rows){
// Got points
// Record points consumption
$mysqli->query("insert into zaszh_answer_points_consume(user_id,points_consume,consume_for,create_date) values('{$user_id}',5,'lottery',unix_timestamp(now()))");
switch($area_selected['prize']){
case 'Xiaomi':
$mysqli->query("update zaszh_prize_surplus set surplus=surplus-1 where prize='Xiaomi' and surplus>0");
if($mysqli->affected_rows){
// There is remaining
$mysqli->query("insert into zaszh_award(user_id,prize,create_date) values('{$user_id}','Xiaomi',unix_timestamp(now()))");
if($mysqli->affected_rows){
echo json_encode(array('status'=>'success','msg'=>'Xiaomi'));
}else{
// Failed to win
}
}else{
//Nothing left
}
break;
case 'Polaroid':
$mysqli->query("update zaszh_prize_surplus set surplus=surplus-1 where prize='Polaroid' and surplus>0");
if($mysqli->affected_rows){
// There is remaining
$mysqli->query("insert into zaszh_award(user_id,prize,create_date) values('{$user_id}','Polaroid',unix_timestamp(now()))");
if($mysqli->affected_rows){
echo json_encode(array('status'=>'success','msg'=>'Polaroid'));
}else{
// Failed to win
}
}else{
//Nothing left
}
break;
case '10 yuan phone bill':
$mysqli->query("update zaszh_telephone_charge_surplus set charge_surplus=charge_surplus-10 where date=substring(now(),1,10) and charge_surplus>=10");
if($mysqli->affected_rows){
// There is remaining
$mysqli->query("insert into zaszh_award(user_id,prize,create_date) values('{$user_id}','10 yuan phone fee',unix_timestamp(now()))");
if($mysqli->affected_rows){
echo json_encode(array('status'=>'success','msg'=>'10 yuan phone fee'));
}else{
// Failed to win
}
}else{
//Nothing left
}
break;
case '5 yuan call fee':
$mysqli->query("update zaszh_telephone_charge_surplus set charge_surplus=charge_surplus-5 where date=substring(now(),1,10) and charge_surplus>=5");
if($mysqli->affected_rows){
// There is remaining
$mysqli->query("insert into zaszh_award(user_id,prize,create_date) values('{$user_id}','5 yuan call fee',unix_timestamp(now()))");
if($mysqli->affected_rows){
echo json_encode(array('status'=>'success','msg'=>'5 yuan phone fee'));
}else{
// Failed to win
}
}else{
//Nothing left
}
break;
default:
echo json_encode(array('status'=>'success','msg'=>'Thank you for participating'));
}
}else{
// No points
echo json_encode(array('status'=>'error','msg'=>'You have insufficient points.'));
}
$mysqli->close();

I hope this article will be helpful to everyone’s PHP programming design.

http://www.bkjia.com/PHPjc/956403.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/956403.htmlTechArticlePHP Roulette Lottery Interface Example This article mainly introduces the implementation method of the PHP Roulette Lottery interface, and the example analyzes the random lottery The implementation principles of the interface and the corresponding database operation skills are required...