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php实现合同管理

2026-02-16 19:46:49PHP

PHP实现合同管理系统的基本方法

使用PHP开发合同管理系统需要结合数据库、前端界面和业务逻辑。以下是一个基本的实现方案：

数据库设计 创建合同管理系统的核心表结构：

CREATE TABLE contracts (
    id INT AUTO_INCREMENT PRIMARY KEY,
    contract_number VARCHAR(50) NOT NULL UNIQUE,
    title VARCHAR(255) NOT NULL,
    content TEXT,
    start_date DATE,
    end_date DATE,
    status ENUM('draft', 'active', 'expired', 'terminated') DEFAULT 'draft',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);

CREATE TABLE parties (
    id INT AUTO_INCREMENT PRIMARY KEY,
    contract_id INT,
    name VARCHAR(255) NOT NULL,
    role ENUM('client', 'supplier', 'partner'),
    contact_info TEXT,
    FOREIGN KEY (contract_id) REFERENCES contracts(id)
);

核心功能实现 合同创建和存储功能示例：

class ContractManager {
    private $db;

    public function __construct($dbConnection) {
        $this->db = $dbConnection;
    }

    public function createContract($data) {
        $stmt = $this->db->prepare("INSERT INTO contracts 
            (contract_number, title, content, start_date, end_date, status) 
            VALUES (?, ?, ?, ?, ?, ?)");
        return $stmt->execute([
            $data['contract_number'],
            $data['title'],
            $data['content'],
            $data['start_date'],
            $data['end_date'],
            $data['status'] ?? 'draft'
        ]);
    }
}

文件上传处理 合同附件管理实现：

function handleContractUpload($file) {
    $uploadDir = 'contracts/uploads/';
    $allowedTypes = ['application/pdf', 'application/msword'];

    if(in_array($file['type'], $allowedTypes)) {
        $filename = uniqid().'_'.$file['name'];
        move_uploaded_file($file['tmp_name'], $uploadDir.$filename);
        return $filename;
    }
    return false;
}

安全措施 实施必要的安全防护：

function sanitizeInput($input) {
    return htmlspecialchars(strip_tags(trim($input)), ENT_QUOTES, 'UTF-8');
}

function validateDate($date, $format = 'Y-m-d') {
    $d = DateTime::createFromFormat($format, $date);
    return $d && $d->format($format) === $date;
}

提醒功能 合同到期提醒实现：

function getExpiringContracts($days = 30) {
    $query = "SELECT * FROM contracts 
              WHERE end_date BETWEEN CURDATE() AND DATE_ADD(CURDATE(), INTERVAL ? DAY)
              AND status = 'active'";
    $stmt = $db->prepare($query);
    $stmt->execute([$days]);
    return $stmt->fetchAll(PDO::FETCH_ASSOC);
}

扩展功能实现方案

电子签名集成 考虑使用第三方API实现电子签名功能：

class ESignService {
    private $apiKey;

    public function __construct($apiKey) {
        $this->apiKey = $apiKey;
    }

    public function requestSignature($documentId, $signers) {
        $client = new GuzzleHttp\Client();
        $response = $client->post('https://esignapi.com/v1/requests', [
            'headers' => ['Authorization' => 'Bearer '.$this->apiKey],
            'json' => [
                'document_id' => $documentId,
                'signers' => $signers
            ]
        ]);
        return json_decode($response->getBody(), true);
    }
}

版本控制 合同版本历史管理：

CREATE TABLE contract_versions (
    id INT AUTO_INCREMENT PRIMARY KEY,
    contract_id INT,
    version INT NOT NULL,
    content TEXT NOT NULL,
    modified_by INT,
    modified_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (contract_id) REFERENCES contracts(id)
);

搜索功能 实现合同全文检索：

function searchContracts($keyword) {
    $query = "SELECT * FROM contracts 
              WHERE MATCH(title, content) AGAINST(? IN BOOLEAN MODE)
              ORDER BY MATCH(title, content) AGAINST(?) DESC";
    $stmt = $db->prepare($query);
    $stmt->execute([$keyword, $keyword]);
    return $stmt->fetchAll(PDO::FETCH_ASSOC);
}

部署注意事项

性能优化 对于大型合同管理系统应考虑：

实现数据库分表策略处理大量合同数据
使用Redis缓存频繁访问的合同内容
为合同表添加合适的索引

备份策略 定期备份合同数据：

function backupContracts($backupDir) {
    $tables = ['contracts', 'parties', 'contract_versions'];
    $backup = [];

    foreach($tables as $table) {
        $stmt = $db->query("SELECT * FROM $table");
        $backup[$table] = $stmt->fetchAll(PDO::FETCH_ASSOC);
    }

    $filename = 'contract_backup_'.date('YmdHis').'.json';
    file_put_contents($backupDir.$filename, json_encode($backup));
}

合规性考虑