phpcms数据筛选

<?php
// 假设我们有一个数据库连接
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "phpcms";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 获取筛选条件
$category = $_GET['category'] ?? '';
$date_start = $_GET['date_start'] ?? '';
$date_end = $_GET['date_end'] ?? '';

// 构建查询语句
$sql = "SELECT * FROM articles WHERE 1=1";
$params = [];

if (!empty($category)) {
    $sql .= " AND category = ?";
    $params[] = $category;
}

if (!empty($date_start) && !empty($date_end)) {
    $sql .= " AND date BETWEEN ? AND ?";
    $params[] = $date_start;
    $params[] = $date_end;
}

// 执行查询
$stmt = $conn->prepare($sql);
$stmt->bind_param(str_repeat("s", count($params)), ...$params);
$stmt->execute();
$result = $stmt->get_result();

// 输出结果
while ($row = $result->fetch_assoc()) {
    echo "ID: " . $row["id"] . " - Title: " . $row["title"] . "<br>";
}

$stmt->close();
$conn->close();
?>