Table of Contents
Tutorial: How to Backup MySQL Database using PHP
About How to Backup MySQL Database using PHP
To beautify the presentation of this tutorial, I’ve used Bootstrap which is included in the downloadable of this tutorial, but if you want, you can download Bootstrap using this link.
Creating a Backup Function
Next, we create the function that backup and download our MySQL database.
Please create a new file, name it as function.php and paste the codes below.
<?php
function backDb($host, $user, $pass, $dbname, $tables = '*'){
//make db connection
$conn = new mysqli($host, $user, $pass, $dbname);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
//get all of the tables
if($tables == '*'){
$tables = array();
$sql = "SHOW TABLES";
$query = $conn->query($sql);
while($row = $query->fetch_row()){
$tables[] = $row[0];
}
}
else{
$tables = is_array($tables) ? $tables : explode(',',$tables);
}
//getting table structures
$outsql = '';
foreach ($tables as $table) {
// Prepare SQLscript for creating table structure
$sql = "SHOW CREATE TABLE $table";
$query = $conn->query($sql);
$row = $query->fetch_row();
$outsql .= "\n\n" . $row[1] . ";\n\n";
$sql = "SELECT * FROM $table";
$query = $conn->query($sql);
$columnCount = $query->field_count;
// Prepare SQLscript for dumping data for each table
for ($i = 0; $i < $columnCount; $i ++) {
while ($row = $query->fetch_row()) {
$outsql .= "INSERT INTO $table VALUES(";
for ($j = 0; $j < $columnCount; $j ++) {
$row[$j] = $row[$j];
if (isset($row[$j])) {
$outsql .= '"' . $row[$j] . '"';
} else {
$outsql .= '""';
}
if ($j < ($columnCount - 1)) {
$outsql .= ',';
}
}
$outsql .= ");\n";
}
}
$outsql .= "\n";
}
// Save the SQL script to a backup file
$backup_file_name = $dbname . '_backup.sql';
$fileHandler = fopen($backup_file_name, 'w+');
fwrite($fileHandler, $outsql);
fclose($fileHandler);
// Download the SQL backup file to the browser
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename=' . basename($backup_file_name));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($backup_file_name));
ob_clean();
flush();
readfile($backup_file_name);
exec('rm ' . $backup_file_name);
}
?>Creating a Form
Next, for the sake of presentation, we are going to create a form where you can put your database credential and database name that you want to backup.
Please create a new file, name it as index.html and paste the codes below.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>How to Backup MySQL Database using PHP</title>
<link rel="stylesheet" type="text/css" href="bootstrap4/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h1 class="text-center" style="margin-top:30px;">Backup MySQL Database using PHP</h1>
<hr>
<div class="row justify-content-center">
<div class="col-sm-6">
<div class="card">
<div class="card-body">
<h3>Database Credential and Name</h3>
<br>
<form method="POST" action="backup.php">
<div class="form-group row">
<label for="server" class="col-sm-3 col-form-label">Server</label>
<div class="col-sm-9">
<input type="text" class="form-control" id="server" name="server" placeholder="ex 'localhost'" required>
</div>
</div>
<div class="form-group row">
<label for="username" class="col-sm-3 col-form-label">Username</label>
<div class="col-sm-9">
<input type="text" class="form-control" id="username" name="username" placeholder="ex 'root'" required>
</div>
</div>
<div class="form-group row">
<label for="password" class="col-sm-3 col-form-label">Password</label>
<div class="col-sm-9">
<input type="text" class="form-control" id="password" name="password" placeholder="db password">
</div>
</div>
<div class="form-group row">
<label for="dbname" class="col-sm-3 col-form-label">Database</label>
<div class="col-sm-9">
<input type="text" class="form-control" id="dbname" name="dbname" placeholder="database name to backup" required>
</div>
</div>
<button type="submit" class="btn btn-primary" name="backup">Backup</button>
</form>
</div>
</div>
</div>
</div>
</div>
</body>
</html>Creating a Submit Action
Lastly, we create the code that handles the submission of our built form.
Please create a new file, name it as backup.php and paste the codes below.
<?php
//include our function
include 'function.php';
if(isset($_POST['backup'])){
//get credentails via post
$server = $_POST['server'];
$username = $_POST['username'];
$password = $_POST['password'];
$dbname = $_POST['dbname'];
//backup and dl using our function
backDb($server, $username, $password, $dbname);
exit();
}
else{
echo 'Fill up database credentail and name';
}
?>That ends this tutorial. Happy Coding!
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