<?php

/**
* Dump data from MySQL database
*
* @name    MySQLDump
* @author  Marcus Vinícius <hide@address.com>
* @version 1.1 2005-06-01
* @example
*
* $dump = new MySQLDump();
* print $dump->dumpDatabase("mydb");
*
*/
class MySQLDump {


    /**
     * Dump data and structure from MySQL database
     *
     * @param string $database
     * @return string
     */
    function dumpDatabase($database) {

        // Connect to database
        $db = @mysql_select_db($database);

        if (!empty($db)) {

            // Get all table names from database
            $c = 0;
            $result = mysql_list_tables($database);
            for($x = 0; $x < mysql_num_rows($result); $x++) {
                $table = mysql_tablename($result, $x);
                if (!empty($table)) {
                    $arr_tables[$c] = mysql_tablename($result, $x);
                    $c++;
                }
            }

            // List tables
            $dump = '';
            for ($y = 0; $y < count($arr_tables); $y++){

                // DB Table name
                $table = $arr_tables[$y];

                // Structure Header
                $structure .= "-- <br>";
                $structure .= "-- Table structure for table `{$table}` <br>";
                $structure .= "-- <br><br>";

                // Dump Structure
                $structure .= "DROP TABLE IF EXISTS `{$table}`; <br>";
                $structure .= "CREATE TABLE `{$table}` (<br>";
                $result = mysql_db_query($database, "SHOW FIELDS FROM `{$table}`");
                while($row = mysql_fetch_object($result)) {

                    $structure .= "  `{$row->Field}` {$row->Type}";
                    $structure .= (!empty($row->Default)) ? " DEFAULT '{$row->Default}'" : false;
                    $structure .= ($row->Null != "YES") ? " NOT NULL" : false;
                    $structure .= (!empty($row->Extra)) ? " {$row->Extra}" : false;
                    $structure .= ",<br>";

                }

                $structure = ereg_replace(",<br>$", "", $structure);

                // Save all Column Indexes in array
                unset($index);
                $result = mysql_db_query($database, "SHOW KEYS FROM `{$table}`");
                while($row = mysql_fetch_object($result)) {

                    if (($row->Key_name == 'PRIMARY') AND ($row->Index_type == 'BTREE')) {
                        $index['PRIMARY'][$row->Key_name] = $row->Column_name;
                    }

                    if (($row->Key_name != 'PRIMARY') AND ($row->Non_unique == '0') AND ($row->Index_type == 'BTREE')) {
                        $index['UNIQUE'][$row->Key_name] = $row->Column_name;
                    }

                    if (($row->Key_name != 'PRIMARY') AND ($row->Non_unique == '1') AND ($row->Index_type == 'BTREE')) {
                        $index['INDEX'][$row->Key_name] = $row->Column_name;
                    }

                    if (($row->Key_name != 'PRIMARY') AND ($row->Non_unique == '1') AND ($row->Index_type == 'FULLTEXT')) {
                        $index['FULLTEXT'][$row->Key_name] = $row->Column_name;
                    }

                }

                // Return all Column Indexes of array
                if (is_array($index)) {
                    foreach ($index as $xy => $columns) {

                        $structure .= ",<br>";

                        $c = 0;
                        foreach ($columns as $column_key => $column_name) {

                            $c++;

                            $structure .= ($xy == "PRIMARY") ? "  PRIMARY KEY  (`{$column_name}`)" : false;
                            $structure .= ($xy == "UNIQUE") ? "  UNIQUE KEY `{$column_key}` (`{$column_name}`)" : false;
                            $structure .= ($xy == "INDEX") ? "  KEY `{$column_key}` (`{$column_name}`)" : false;
                            $structure .= ($xy == "FULLTEXT") ? "  FULLTEXT `{$column_key}` (`{$column_name}`)" : false;

                            $structure .= ($c < (count($index[$xy]))) ? ",<br>" : false;

                        }

                    }

                }

                $structure .= "<br>);<br><br>";

                // Header
                $structure .= "-- <br>";
                $structure .= "-- Dumping data for table `$table` <br>";
                $structure .= "-- <br><br>";

                // Dump data
                unset($data);
                $result     = mysql_query("SELECT * FROM `$table`");
                $num_rows   = mysql_num_rows($result);
                $num_fields = mysql_num_fields($result);

                for ($i = 0; $i < $num_rows; $i++) {

                    $row = mysql_fetch_object($result);
                    $data .= "INSERT INTO `$table` (";

                    // Field names
                    for ($x = 0; $x < $num_fields; $x++) {

                        $field_name = mysql_field_name($result, $x);

                        $data .= "`{$field_name}`";
                        $data .= ($x < ($num_fields - 1)) ? ", " : false;

                    }

                    $data .= ") VALUES (";

                    // Values
                    for ($x = 0; $x < $num_fields; $x++) {
                        $field_name = mysql_field_name($result, $x);

                        $data .= "'" . str_replace('\"', '"', mysql_escape_string($row->$field_name)) . "'";
                        $data .= ($x < ($num_fields - 1)) ? ", " : false;

                    }

                    $data.= ");<br>";
                }

                $data.= "<br>";

                $dump .= $structure . $data;
                $dump .= "-- --------------------------------------------------------<br><br>";

            }

            return $dump;

        }

    }

}

?>