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  • Как сделать бэкап базы данных mysql с помощью php?

    Kalaganov5
    @Kalaganov5
    Реклама, Аналитика, Веб-разработка
    Кому интересно, нашёл такое решение

    <?php
    
    /**
    * Updated: Mohammad M. AlBanna
    * Website: MBanna.info
    */
    
    // MySQL server and database
    $dbhost = 'localhost';
    $dbuser = 'user';
    $dbpass = 'pass';
    $dbname = 'name';
    $tables = '*';
    
    // Call the core function
    backup_tables($dbhost, $dbuser, $dbpass, $dbname, $tables);
    
    // Core function
    function backup_tables($host, $user, $pass, $dbname, $tables = '*') {
        $link = mysqli_connect($host, $user, $pass, $dbname);
    
        // Check connection
        if (mysqli_connect_errno()) {
            echo "Failed to connect to MySQL: " . mysqli_connect_error();
            exit;
        }
    
        mysqli_query($link, "SET NAMES 'utf8'");
    
        // Get all of the tables
        if ($tables == '*') {
            $tables = array();
            $result = mysqli_query($link, 'SHOW TABLES');
            while ($row = mysqli_fetch_row($result)) {
                $tables[] = $row[0];
            }
        } else {
            $tables = is_array($tables) ? $tables : explode(',', $tables);
        }
    
        $return = '';
        // Cycle through tables
        foreach ($tables as $table) {
            $result = mysqli_query($link, 'SELECT * FROM ' . $table);
            $num_fields = mysqli_num_fields($result);
            $num_rows = mysqli_num_rows($result);
    
            $return .= 'DROP TABLE IF EXISTS ' . $table . ';';
            $row2 = mysqli_fetch_row(mysqli_query($link, 'SHOW CREATE TABLE ' . $table));
            $return .= "\n\n" . $row2[1] . ";\n\n";
            $counter = 1;
    
            // Over tables
            for ($i = 0; $i < $num_fields; $i++) {
                // Over rows
                while ($row = mysqli_fetch_row($result)) {
                    if ($counter == 1) {
                        $return .= 'INSERT INTO ' . $table . ' VALUES(';
                    } else {
                        $return .= '(';
                    }
    
                    // Over fields
                    for ($j = 0; $j < $num_fields; $j++) {
                        if (isset($row[$j])) {
                            $row[$j] = mysqli_real_escape_string($link, $row[$j]);
                            $row[$j] = str_replace("\n", "\\n", $row[$j]);
                            $return .= '"' . $row[$j] . '"';
                        } else {
                            $return .= '""';
                        }
                        if ($j < ($num_fields - 1)) {
                            $return .= ',';
                        }
                    }
    
                    if ($num_rows == $counter) {
                        $return .= ");\n";
                    } else {
                        $return .= "),\n";
                    }
                    ++$counter;
                }
            }
            $return .= "\n\n\n";
        }
    
        // Save file
        $fileName = 'db-backup-' . time() . '-' . (md5(implode(',', $tables))) . '.sql';
        $handle = fopen($fileName, 'w+');
        fwrite($handle, $return);
        if (fclose($handle)) {
            echo "Done, the file name is: " . $fileName;
        } else {
            echo "Error writing to file.";
        }
    
        // Close the database connection
        mysqli_close($link);
    }
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