How to achieve regular synchronization of employee attendance data through PHP?

How to achieve regular synchronization of employee attendance data through PHP?

As the scale of an enterprise expands, employee attendance data synchronization becomes more and more important. By using PHP to achieve regular synchronization of employee attendance data, automatic data processing can be easily realized. This article will introduce how to implement regular synchronization of employee attendance data through the PHP programming language, and provide specific code examples.

1. Requirements Analysis

Before we start writing code, we first need to clarify our needs. The function we want to implement is to synchronize employee attendance data from one place to another regularly every day. Specifically, we need to extract employee attendance records from the source data and then store them in the target data in a certain format.

2. Code implementation

1. Create database table

First, we need to create a table in the target database to store employee attendance data. You can use the following SQL statement to create a table:

CREATE TABLE `attendance` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user_id` int(11) NOT NULL,
  `date` date NOT NULL,
  `clock_in` time DEFAULT NULL,
  `clock_out` time DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

2. Write a synchronization script

Next, we need to write a PHP script to implement scheduled synchronization of data. You can use the following code as a template for the script:

<?php

// 连接源数据库
$source_db_host = 'localhost';
$source_db_user = 'username';
$source_db_pass = 'password';
$source_db_name = 'source_db';
$source_db = mysqli_connect($source_db_host, $source_db_user, $source_db_pass, $source_db_name);

if (!$source_db) {
    die('源数据库连接失败: ' . mysqli_connect_error());
}

// 连接目标数据库
$target_db_host = 'localhost';
$target_db_user = 'username';
$target_db_pass = 'password';
$target_db_name = 'target_db';
$target_db = mysqli_connect($target_db_host, $target_db_user, $target_db_pass, $target_db_name);

if (!$target_db) {
    die('目标数据库连接失败: ' . mysqli_connect_error());
}

// 获取源数据库中的员工考勤数据
$sql = "SELECT * FROM employee_attendance";
$result = mysqli_query($source_db, $sql);

if (!$result) {
    die('查询失败: ' . mysqli_error($source_db));
}

// 将数据插入到目标数据库中
while ($row = mysqli_fetch_assoc($result)) {
    $user_id = $row['user_id'];
    $date = $row['date'];
    $clock_in = $row['clock_in'];
    $clock_out = $row['clock_out'];

    $sql = "INSERT INTO attendance (user_id, date, clock_in, clock_out) VALUES ('$user_id', '$date', '$clock_in', '$clock_out')";
    $result = mysqli_query($target_db, $sql);

    if (!$result) {
        die('插入数据失败: ' . mysqli_error($target_db));
    }
}

// 关闭数据库连接
mysqli_close($source_db);
mysqli_close($target_db);

echo "数据同步完成！";

3. Set a scheduled task

Finally, we need to set up a scheduled task to execute the above PHP script regularly. You can use the crontab command to set up scheduled tasks. The specific command is as follows:

crontab -e

Then add the following command to the crontab file to perform data synchronization at 2 am every day:

0 2 * * * php /path/to/sync_attendance.php

Save and Just exit the crontab file.

3. Summary

Through the above steps, we can easily use PHP to achieve regular synchronization of employee attendance data. First create the target database table, then write a PHP script to synchronize the data, and use the crontab command to set up scheduled tasks. The above code example is only a simplified version and may be adjusted according to the actual situation.

I hope this article can help you achieve regular synchronization of employee attendance data!

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