The use of production capacity analysis functions developed by PHP in enterprise resource planning (ERP) systems

The use of the production capacity analysis function developed by PHP in the enterprise resource planning (ERP) system

With the continuous expansion of the scale of enterprises and the complexity of the production process, how to scientifically and reasonably carry out production planning and management has become an important issue for enterprises. In order to improve production efficiency and reduce costs, many companies have begun to introduce enterprise resource planning (ERP) systems. In the ERP system, the production capacity analysis function is a very critical part, which can help companies rationally plan and utilize production resources. This article will introduce the use of the production capacity analysis function developed by PHP in the ERP system and give relevant code examples.

The production capacity analysis function mainly includes three aspects: evaluation of production capacity, formulation of production plans and allocation of production tasks.

First of all, the evaluation of production capacity is the most basic step in the production capacity analysis function. By evaluating the company's production equipment, staffing and material supply, the upper limit of the company's production capacity can be determined. In the ERP system, PHP development-related functional modules can be used to count and analyze these data and conduct production capacity assessment. The following is a simple PHP code example for calculating the production capacity of a certain production equipment:

<?php
function calculate_capacity($machine_id, $days) {
  // 查询该设备的生产速度（单位：产品/小时）
  $sql = "SELECT production_speed FROM machines WHERE id = $machine_id";
  $result = mysqli_query($conn, $sql);
  $row = mysqli_fetch_assoc($result);
  $production_speed = $row['production_speed'];

  // 计算该设备在指定天数内的产能
  $capacity = $production_speed * 24 * $days;

  return $capacity;
}
?>

In the above code example, we first query the production speed of a certain equipment from the database, and then based on the production speed and The number of days calculates the equipment's production capacity for a specified number of days.

Secondly, the formulation of production plans is the core of the production capacity analysis function. Based on the enterprise's production needs and production capacity assessment results, a reasonable production plan can be formulated. In the ERP system, PHP development-related functional modules can be used to generate production plans and automatically adjust the plans to adapt to the actual situation. The following is a simple PHP code example for generating a production plan within a specified date range:

<?php
function generate_production_plan($start_date, $end_date) {
  $plan = array();

  // 查询所有产品的生产需求
  $sql = "SELECT product_id, quantity FROM product_demands WHERE demand_date BETWEEN $start_date AND $end_date";
  $result = mysqli_query($conn, $sql);

  while ($row = mysqli_fetch_assoc($result)) {
    $product_id = $row['product_id'];
    $quantity = $row['quantity'];

    // 查询该产品的生产设备
    $sql = "SELECT machine_id FROM product_machines WHERE product_id = $product_id";
    $result2 = mysqli_query($conn, $sql);
    $row2 = mysqli_fetch_assoc($result2);
    $machine_id = $row2['machine_id'];

    // 计算该设备在指定天数内的可用工时
    $working_hours = calculate_working_hours($machine_id, $start_date, $end_date);

    // 计算该设备在可用工时范围内的产量
    $capacity = calculate_capacity($machine_id, $working_hours);

    // 如果产能不足以满足需求，则调整需求量
    if ($capacity < $quantity) {
      $quantity = $capacity;
    }

    $plan[] = array(
      'product_id' => $product_id,
      'quantity' => $quantity,
      'machine_id' => $machine_id,
      'start_date' => $start_date,
      'end_date' => $end_date
    );
  }

  return $plan;
}
?>

In the above code example, we first query the production requirements of all products within the specified date range, and then based on the product's Production equipment and available man-hours are used to calculate the production schedule for each product. If production demand for a product exceeds available capacity, the demand is adjusted to available capacity.

Finally, the allocation of production tasks is the last step of the production capacity analysis function. Based on the generated production plan, tasks can be assigned to corresponding production equipment and personnel. In the ERP system, PHP development-related functional modules can be used to complete the distribution and tracking of production tasks. The following is a simple PHP code example for converting a production plan into a production task:

<?php
function create_production_tasks($plan) {
  foreach ($plan as $item) {
    $product_id = $item['product_id'];
    $quantity = $item['quantity'];
    $machine_id = $item['machine_id'];
    $start_date = $item['start_date'];
    $end_date = $item['end_date'];

    // 创建生产任务记录
    $sql = "INSERT INTO production_tasks (product_id, quantity, machine_id, start_date, end_date) VALUES ($product_id, $quantity, $machine_id, $start_date, $end_date)";
    mysqli_query($conn, $sql);
  }
}
?>

In the above code example, we iterate through each product in the production plan and then convert it into the corresponding production Task records and insert them into the database.

In summary, the use of the production capacity analysis function developed by PHP in the enterprise resource planning (ERP) system is very important. Through the evaluation of production capacity, the formulation of production plans and the allocation of production tasks, it can help enterprises achieve reasonable planning and utilization of production resources. This article gives relevant code examples for readers' reference and practice.

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