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php 怎么实现门禁

2026-02-15 04:05:12PHP

使用PHP实现门禁系统

PHP可以通过多种方式实现门禁功能，包括基于数据库验证、API接口验证或硬件设备交互。以下是几种常见的方法：

数据库验证方式

通过数据库存储用户权限信息，验证用户是否有权限进入特定区域。

<?php
session_start();
$user_id = $_SESSION['user_id'];
$door_id = $_POST['door_id'];

// 连接数据库
$db = new PDO('mysql:host=localhost;dbname=access_control', 'username', 'password');

// 检查用户权限
$stmt = $db->prepare("SELECT * FROM user_permissions WHERE user_id = ? AND door_id = ?");
$stmt->execute([$user_id, $door_id]);
$permission = $stmt->fetch();

if ($permission) {
    // 有权限，开门
    echo json_encode(['status' => 'success', 'message' => 'Access granted']);
} else {
    // 无权限
    echo json_encode(['status' => 'error', 'message' => 'Access denied']);
}
?>

RFID/NFC卡验证

与硬件读卡器集成，验证RFID或NFC卡的合法性。

<?php
$card_uid = $_POST['card_uid'];

// 验证卡片
$db = new PDO('mysql:host=localhost;dbname=access_control', 'username', 'password');
$stmt = $db->prepare("SELECT * FROM registered_cards WHERE card_uid = ?");
$stmt->execute([$card_uid]);
$card = $stmt->fetch();

if ($card) {
    // 合法卡片，开门
    echo "ACCESS_GRANTED";
    // 记录访问日志
    $log_stmt = $db->prepare("INSERT INTO access_logs (card_id, access_time) VALUES (?, NOW())");
    $log_stmt->execute([$card['id']]);
} else {
    echo "ACCESS_DENIED";
}
?>

面部识别集成

与面部识别系统API集成，实现生物识别门禁。

<?php
$image_data = $_POST['image'];
$api_key = 'YOUR_FACE_API_KEY';

// 调用面部识别API
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.face-recognition.com/verify");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode(['image' => $image_data]));
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Authorization: Bearer '.$api_key, 'Content-Type: application/json']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$response = curl_exec($ch);
curl_close($ch);

$result = json_decode($response, true);

if ($result['verified']) {
    echo "ACCESS_GRANTED";
} else {
    echo "ACCESS_DENIED";
}
?>

时间限制访问

实现基于时间的访问控制，限制特定时段才能进入。

<?php
$user_id = $_POST['user_id'];
$current_time = date('H:i');

$db = new PDO('mysql:host=localhost;dbname=access_control', 'username', 'password');
$stmt = $db->prepare("SELECT * FROM user_schedules WHERE user_id = ? AND start_time <= ? AND end_time >= ?");
$stmt->execute([$user_id, $current_time, $current_time]);
$schedule = $stmt->fetch();

if ($schedule) {
    echo "ACCESS_GRANTED";
} else {
    echo "ACCESS_DENIED: Outside allowed time";
}
?>

硬件接口控制

通过PHP与门禁控制器通信，实际控制门的开关。

<?php
// 通过GPIO控制门锁
function controlDoor($state) {
    $gpio_pin = 17; // 根据实际接线调整

    // 执行系统命令控制GPIO
    if ($state === 'open') {
        exec("gpio -g mode $gpio_pin out");
        exec("gpio -g write $gpio_pin 1");
        sleep(5); // 保持开门状态5秒
        exec("gpio -g write $gpio_pin 0");
    }
}

// 验证通过后开门
controlDoor('open');
?>