Data backup and recovery operations of PHP commodity inventory management system

Data backup and recovery operation of PHP commodity inventory management system

With the rise and development of e-commerce, commodity inventory management has become an issue that merchants must face Important work. In daily operations, problems such as data loss and system failure will inevitably be encountered, so it is particularly important to establish a reliable data backup and recovery mechanism. This article will introduce how to use PHP to implement data backup and recovery operations in the commodity inventory management system.

1. Data backup

Data backup refers to copying data such as merchandise and inventory information in the system and storing it in other locations so that the backup can be restored after errors, failures or disasters. The data. In PHP, we can use the export function of the MySQL database to achieve data backup.

The specific operations are as follows:

1. Connect to the database:

<?php
$servername = "localhost";
$username = "root";
$password = "password";
$dbname = "inventory_system";
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
?>

2. Export data:

<?php
// 获取所有表名
$tables = array();
$result = $conn->query("SHOW TABLES");
while ($row = $result->fetch_row()) {
    $tables[] = $row[0];
}

// 遍历所有表，导出数据
foreach ($tables as $table) {
    $filename = $table . ".sql";
    $handle = fopen($filename, 'w');
 
    $result = $conn->query("SELECT * FROM $table");
    while ($row = $result->fetch_row()) {
        $sql = "INSERT INTO $table VALUES (";
        foreach ($row as $item) {
            $sql .= "'" . $conn->real_escape_string($item) . "',";
        }
        $sql = rtrim($sql, ",");
        $sql .= ");
";
        fwrite($handle, $sql);
    }
 
    fclose($handle);
}
?>

The above code The data of each table will be stored in a .sql file with the table name as the file name.

2. Data recovery

Data recovery refers to re-importing the backed-up data files into the system to restore the original product and inventory information after data loss or damage occurs in the system. In PHP, we can use the import function of the MySQL database to achieve data recovery.

The specific operations are as follows:

1. Connect to the database:

<?php
$servername = "localhost";
$username = "root";
$password = "password";
$dbname = "inventory_system";
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
?>

2. Import data:

<?php
// 获取备份文件列表
$files = glob("*.sql");

// 遍历备份文件，导入数据
foreach ($files as $file) {
    // 从备份文件名中获取表名
    $table = preg_replace("/.sql$/", "", $file);

    // 导入数据
    $sql = file_get_contents($file);
    $conn->query($sql);
}
?>

The above code The data in each .sql file will be imported into the corresponding table.

In summary, it is very important to use PHP to implement data backup and recovery operations of the commodity inventory management system. Regular data backup can ensure the security and integrity of system data; when data is lost or damaged in the system, data recovery operations can quickly restore it to the state before the error. Through the above code examples, I believe readers will have a more detailed understanding of how to implement data backup and recovery operations. In actual development, the data backup and recovery mechanism can be further improved and optimized according to specific business needs to ensure the stability and reliability of the system.

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