我正在尝试为我的php民意测验定义php变量。我要回应“祝你今天愉快！”如果对“你好”的投票比对“其他”的投票更多，则回声“祝你晚安！”。 ：
if ($votePercent < $votePercent) {
echo "Have a good day!";
} else {
echo "Have a good night!";
}
?>
如何定义变量$ votePercent？
<div class="container">
<h3><?php echo $pollResult['poll']; ?></h3>
<p><b>Total Votes:</b> <?php echo $pollResult['total_votes']; ?></p>
<?php
if(!empty($pollResult['options'])){ $i=0;
//options bar color class array
$barColorArr = array('azure','emerald','violet','yellow','red');
//generate option bars with votes count
foreach($pollResult['options'] as $opt=>$vote){
//calculate vote percent
$votePercent = round(($vote/$pollResult['total_votes'])*100);
$votePercent = !empty($votePercent)?$votePercent.'%':'0%';
//define bar color class
if(!array_key_exists($i, $barColorArr)){
$i = 0;
}
$barColor = $barColorArr[$i];
?>
<div class="bar-main-container <?php echo $barColor; ?>">
<div class="txt"><?php echo $opt; ?></div>
<div class="wrap">
<div class="bar-percentage"><?php echo $votePercent; ?></div>
<div class="bar-container">
<div class="bar" style="width: <?php echo $votePercent; ?>;"></div>
</div>
</div>
</div>
<?php $i++; } } ?>
<a href="index.php">Back To Poll</a>
</div>
这是我连接到mysql的方式。
<?php
class Poll{
private $dbHost = 'localhost';
private $dbUser = '';
private $dbPwd = '';
private $dbName = '';
private $db = false;
private $pollTbl = 'polls';
private $optTbl = 'poll_options';
private $voteTbl = 'poll_votes';
public function __construct(){
if(!$this->db){
// Connect to the database
$conn = new mysqli($this->dbHost, $this->dbUser, $this->dbPwd, $this->dbName);
if($conn->connect_error){
die("Failed to connect with MySQL: " . $conn->connect_error);
}else{
$this->db = $conn;
}
}
}
/*
* Runs query to the database
* @param string SQL
* @param string count, single, all
*/
private function getQuery($sql,$returnType = ''){
$result = $this->db->query($sql);
if($result){
switch($returnType){
case 'count':
$data = $result->num_rows;
break;
case 'single':
$data = $result->fetch_assoc();
break;
default:
if($result->num_rows > 0){
while($row = $result->fetch_assoc()){
$data[] = $row;
}
}
}
}
return !empty($data)?$data:false;
}
/*
* Get polls data
* Returns single or multiple poll data with respective options
* @param string single, all
*/
public function getPolls($pollType = 'single'){
$pollData = array();
$sql = "SELECT * FROM ".$this->pollTbl." WHERE status = '1' ORDER BY created DESC";
$pollResult = $this->getQuery($sql, $pollType);
if(!empty($pollResult)){
if($pollType == 'single'){
$pollData['poll'] = $pollResult;
$sql2 = "SELECT * FROM ".$this->optTbl." WHERE poll_id = ".$pollResult['id']." AND status = '1'";
$optionResult = $this->getQuery($sql2);
$pollData['options'] = $optionResult;
}else{
$i = 0;
foreach($pollResult as $prow){
$pollData[$i]['poll'] = $prow;
$sql2 = "SELECT * FROM ".$this->optTbl." WHERE poll_id = ".$prow['id']." AND status = '1'";
$optionResult = $this->getQuery($sql2);
$pollData[$i]['options'] = $optionResult;
}
}
}
return !empty($pollData)?$pollData:false;
}
/*
* Submit vote
* @param array of poll option data
*/
public function vote($data = array()){
if(!isset($data['poll_id']) || !isset($data['poll_option_id']) || isset($_COOKIE[$data['poll_id']])){
return false;
}else{
$sql = "SELECT * FROM ".$this->voteTbl." WHERE poll_id = ".$data['poll_id']." AND poll_option_id = ".$data['poll_option_id'];
$preVote = $this->getQuery($sql, 'count');
if($preVote > 0){
$query = "UPDATE ".$this->voteTbl." SET vote_count = vote_count+1 WHERE poll_id = ".$data['poll_id']." AND poll_option_id = ".$data['poll_option_id'];
$update = $this->db->query($query);
}else{
$query = "INSERT INTO ".$this->voteTbl." (poll_id,poll_option_id,vote_count) VALUES (".$data['poll_id'].",".$data['poll_option_id'].",1)";
$insert = $this->db->query($query);
}
return true;
}
}
/*
* Get poll result
* @param poll ID
*/
public function getResult($pollID){
$resultData = array();
if(!empty($pollID)){
$sql = "SELECT p.subject, SUM(v.vote_count) as total_votes FROM ".$this->voteTbl." as v LEFT JOIN ".$this->pollTbl." as p ON p.id = v.poll_id WHERE poll_id = ".$pollID;
$pollResult = $this->getQuery($sql,'single');
if(!empty($pollResult)){
$resultData['poll'] = $pollResult['subject'];
$resultData['total_votes'] = $pollResult['total_votes'];
$sql2 = "SELECT o.id, o.name, v.vote_count FROM ".$this->optTbl." as o LEFT JOIN ".$this->voteTbl." as v ON v.poll_option_id = o.id WHERE o.poll_id = ".$pollID;
$optResult = $this->getQuery($sql2);
if(!empty($optResult)){
foreach($optResult as $orow){
$resultData['options'][$orow['name']] = $orow['vote_count'];
}
}
}
}
return !empty($resultData)?$resultData:false;
}
}
这是index.php代码。
<form method="post" action="">
<h3><?php echo $pollData['poll']['subject']; ?></h3>
<ul>
<?php foreach($pollData['options'] as $opt){
echo '<li><input type="radio" name="voteOpt" value="'.$opt['id'].'" >'.$opt['name'].'</li>';
} ?>
</ul>
<input type="hidden" name="pollID" value="<?php echo $pollData['poll']['id']; ?>">
<input type="submit" name="voteSubmit" value="Vote">
<a href="results.php?pollID=<?php echo $pollData['poll']['id']; ?>">Results</a>
</form>
这是我的测试网址：php poll。如果您需要更多详细信息，请告诉我。我不确定需要在此处显示哪个代码。非常感谢您的帮助。
答案 0 :(得分：0)
尝试一下- results.php
structure(list(dt = structure(c(1576173947, 1576173957, 1576173976,
1576173979, 1576174036, 1576177636), class = c("POSIXct", "POSIXt"
), tzone = ""), name = structure(c(1L, 1L, 2L, 2L, 2L, 2L), .Label = c("Jane Jetson",
"John Doe"), class = "factor"), foo_id = c(106337L, 106337L,
106338L, 106338L, 106338L, 106338L), foo_role = structure(c(1L,
1L, 1L, 1L, 1L, 1L), .Label = "Mechanic", class = "factor"),
bikeId = c(12345L, 12345L, 12345L, 12345L, 12345L, 56789L
), station_name = structure(c(1L, 1L, 1L, 1L, 1L, 2L), .Label = c("FooStation",
"Some Station"), class = "factor"), station_id = c(1234.89,
1234.89, 1234.89, 1234.89, 1234.89, 4567.12), action = c("Release",
"Return", "Release", "Return", "Release", "Release")), row.names = c(NA,
-6L), class = "data.frame")
index.php
在此页面中，单选按钮值为1和2