构建财务预算功能的企业资源计划（ERP）系统的PHP开发

<?php

// 数据库连接配置
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "erp_system";

// 建立数据库连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接是否成功
if ($conn->connect_error) {
    die("连接失败：" . $conn->connect_error);
}

// 获取预算目标
function getBudgetTargets($year) {
    global $conn;
    
    $sql = "SELECT * FROM budget_targets WHERE year = $year";
    $result = $conn->query($sql);
    
    if ($result->num_rows > 0) {
        $targets = array();
        
        while ($row = $result->fetch_assoc()) {
            $targets[] = $row;
        }
        
        return $targets;
    } else {
        return null;
    }
}

// 调整预算
function adjustBudget($year, $amount) {
    global $conn;
    
    $sql = "UPDATE budget_targets SET amount = amount + $amount WHERE year = $year";
    
    if ($conn->query($sql) === TRUE) {
        return true;
    } else {
        return false;
    }
}

// 数据收集
function collectData($year, $data) {
    global $conn;
    
    $sql = "INSERT INTO budget_data (year, data) VALUES ($year, '$data')";
    
    if ($conn->query($sql) === TRUE) {
        return true;
    } else {
        return false;
    }
}

// 数据分析
function analyzeData($year) {
    global $conn;
    
    $sql = "SELECT * FROM budget_data WHERE year = $year";
    $result = $conn->query($sql);
    
    if ($result->num_rows > 0) {
        $total = 0;
        
        while ($row = $result->fetch_assoc()) {
            $data = json_decode($row['data'], true);
            $total += $data['amount'];
        }
        
        return $total;
    } else {
        return 0;
    }
}

// 生成预算报告
function generateReport($year) {
    $targets = getBudgetTargets($year);
    $total = analyzeData($year);
    
    if ($targets && $total) {
        $report = "预算报告（$year年）：
";
        
        foreach ($targets as $target) {
            $report .= "- " . $target['description'] . ": " . $target['amount'] . "
";
        }
        
        $report .= "实际支出：$total
";
        
        return $report;
    } else {
        return "没有相关数据。";
    }
}

?>