以下是PHP页代码
<?php
require("config.php");
// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("连接失败:" . $conn->connect_error);
}
$zba = 20200421;
$sql = "SELECT * FROM jishu where id = ".$zba;
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// 输出数据
$row = $result->fetch_assoc();
} else {
echo "0 结果";
}
$conn->close();
?>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0,minimum-scale=1.0, maximum-scale=1.0,user-scalable=no">
<title>数据</title>
<link type="text/css" rel="stylesheet" href="css/css.css">
<script src="js/echarts.min.js"></script>
</head>
<body>
<?php echo $row["zbb"];?>
</body>
</html>
前端返回显示“ 0结果 ”
怀疑是数据库没设置对，又不知道问题出在哪，望大佬指教下~
