phpcms内容筛选方法

<?php
// 假设我们有一个内容表 content，包含字段 id, title, category, publish_time

// 连接数据库
$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'] ?? '';
$keyword = $_GET['keyword'] ?? '';
$start_time = $_GET['start_time'] ?? '';
$end_time = $_GET['end_time'] ?? '';

// 构建 SQL 查询
$sql = "SELECT * FROM content WHERE 1=1";
$params = [];

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

if (!empty($keyword)) {
    $sql .= " AND title LIKE ?";
    $params[] = "%$keyword%";
}

if (!empty($start_time) && !empty($end_time)) {
    $sql .= " AND publish_time BETWEEN ? AND ?";
    $params[] = $start_time;
    $params[] = $end_time;
}

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

// 处理结果
$contents = [];
while ($row = $result->fetch_assoc()) {
    $contents[] = $row;
}

// 关闭连接
$stmt->close();
$conn->close();

// 输出结果
print_r($contents);
?>