How to Take Database Backup without using phpmyadmin? [duplicate] - php

Question

This question already has answers here:
Using a .php file to generate a MySQL dump
(13 answers)
Closed 7 years ago.
How can I take backup of all tables of a database from ftp without using phpmyadmin and get the backup as a .sql file ??

Answer 1

Use shell_exe() to create the backup via PHP.
<?php
$dbuser = ''; // database user
$dbpass = ''; // database password
$dbhost = ''; // database host
$dbname = ''; // database name
$create = shell_exec("mysqldump --user=$dbuser --password=$dbpass --host=$dbhost $dbname> mysql_dumb.sql");
// header('Location: mysql_dumb.sql'); // you can optionally download it but secure access to the file before doing this
?>

Answer 2

This script would do whatever you need.
MySQL connections need to be improved though, but works fine.
<?php
// Report all errors
error_reporting(E_ALL);
/**
* Define database parameters here
*/
define("DB_USER", '');
define("DB_PASSWORD", '');
define("DB_NAME", '');
define("DB_HOST", '');
define("OUTPUT_DIR", '');
define("TABLES", '*');
/**
* Instantiate Backup_Database and perform backup
*/
$backupDatabase = new Backup_Database(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
$status = $backupDatabase->backupTables(TABLES, OUTPUT_DIR) ? 'OK' : 'KO';
echo "<br /><br /><br />Backup result: " . $status;
/**
* The Backup_Database class
*/
class Backup_Database
{
/**
* Host where database is located
*/
var $host = '';
/**
* Username used to connect to database
*/
var $username = '';
/**
* Password used to connect to database
*/
var $passwd = '';
/**
* Database to backup
*/
var $dbName = '';
/**
* Database charset
*/
var $charset = '';
/**
* Constructor initializes database
*/
function Backup_Database($host, $username, $passwd, $dbName, $charset = 'utf8')
{
$this->host = $host;
$this->username = $username;
$this->passwd = $passwd;
$this->dbName = $dbName;
$this->charset = $charset;
$this->initializeDatabase();
}
protected function initializeDatabase()
{
$conn = mysql_connect($this->host, $this->username, $this->passwd);
mysql_select_db($this->dbName, $conn);
if (!mysql_set_charset($this->charset, $conn)) {
mysql_query('SET NAMES ' . $this->charset);
}
}
/**
* Backup the whole database or just some tables
* Use '*' for whole database or 'table1 table2 table3...'
* #param string $tables
*/
public function backupTables($tables = '*', $outputDir = '.')
{
try {
/**
* Tables to export
*/
if ($tables == '*') {
$tables = array();
$result = mysql_query('SHOW TABLES');
while ($row = mysql_fetch_row($result)) {
$tables[] = $row[0];
}
} else {
$tables = is_array($tables) ? $tables : explode(',', $tables);
}
$sql = 'CREATE DATABASE IF NOT EXISTS ' . $this->dbName . ";\n\n";
$sql .= 'USE ' . $this->dbName . ";\n\n";
/**
* Iterate tables
*/
foreach ($tables as $table) {
echo "Backing up " . $table . " table...";
$result = mysql_query('SELECT * FROM ' . $table);
$numFields = mysql_num_fields($result);
$sql .= 'DROP TABLE IF EXISTS ' . $table . ';';
$row2 = mysql_fetch_row(mysql_query('SHOW CREATE TABLE ' . $table));
$sql .= "\n\n" . $row2[1] . ";\n\n";
for ($i = 0; $i < $numFields; $i++) {
while ($row = mysql_fetch_row($result)) {
$sql .= 'INSERT INTO ' . $table . ' VALUES(';
for ($j = 0; $j < $numFields; $j++) {
$row[$j] = addslashes($row[$j]);
$row[$j] = preg_replace("[^\r]\n", "\\n", $row[$j]);
if (isset($row[$j])) {
$sql .= '"' . $row[$j] . '"';
} else {
$sql .= '""';
}
if ($j < ($numFields - 1)) {
$sql .= ',';
}
}
$sql .= ");\n";
}
}
$sql .= "\n\n\n";
echo " OK" . "<br />";
}
}
catch (Exception $e) {
var_dump($e->getMessage());
return false;
}
return $this->saveFile($sql, $outputDir);
}
/**
* Save SQL to file
* #param string $sql
*/
protected function saveFile(&$sql, $outputDir = '.')
{
if (!$sql)
return false;
try {
$handle = fopen($outputDir . '/db-backup-' . $this->dbName . '-' . date("Ymd-His", time()) . '.sql', 'w+');
fwrite($handle, $sql);
fclose($handle);
}
catch (Exception $e) {
var_dump($e->getMessage());
return false;
}
return true;
}
}