How can I export a MySQL database using PHP and provide user control over the process?

Exporting MySQL Databases Using PHP

Exporting MySQL databases can be done using PHP by accessing the database, retrieving its data, and writing it to a file. Let's delve into the details:

1. Establish Database Connection:

<?php
$DB_HOST = "localhost";
$DB_USER = "root";
$DB_PASS = "admin";
$DB_NAME = "dbname";

$con = new mysqli($DB_HOST, $DB_USER, $DB_PASS, $DB_NAME);
?>

2. Retrieve Database Structure and Data:

$tables = array();
$result = mysqli_query($con, "SHOW TABLES");

while ($row = mysqli_fetch_row($result)) {
    $tables[] = $row[0];
}

$return = '';

foreach ($tables as $table) {
    $result = mysqli_query($con, "SELECT * FROM " . $table);
    ... // Process and store the table data in $return
}
?>

3. Save the Backup:

$handle = fopen('backup.sql', 'w+');
fwrite($handle, $return);
fclose($handle);

4. Enhance User Control:
To allow users to choose the save location, you can use a form with an input field for the desired file path:

<form action="export.php" method="post">
    <label for="filepath">File Path:</label>
    <input type="text">

In "export.php":

<?php
$filepath = $_POST['filepath'];
... // Execute the backup code as before, saving the file to $filepath
?>

5. Enable File Browsing for Restore:
To allow users to browse for the backup file, use an input field with the "file" type:

<form action="restore.php" method="post" enctype="multipart/form-data">
    <label for="backupfile">Backup File:</label>
    <input type="file">

In "restore.php":

<?php
$backupfile = $_FILES['backupfile']['tmp_name'];
... // Execute the restore code using the uploaded backup file
?>

Additional Notes:

• It's recommended to use the mysqli API instead of the deprecated mysql functions.
• Ensure that your backup code is secure and protects against SQL injection vulnerabilities.
• For more advanced techniques, consider using PHP第三方 libraries such as PhpMyAdmin or mysqldump.

The above is the detailed content of How can I export a MySQL database using PHP and provide user control over the process?. For more information, please follow other related articles on the PHP Chinese website!