如何使用php脚本导出和导入mysql数据库及其数据?

I was asked to create an export and import mysql database with it's structure and data into a .sql file using php scripting and not phpmyadmin to make the user be able to backup his data?

我被要求使用php脚本创建一个导出并将mysql数据库的结构和数据导入到.sql文件中，而不是使用phpmyadmin来让用户能够备份数据?

Does anybody have an idea how to do that??

有人知道怎么做吗??

Thanks in advance

谢谢提前

3 个解决方案

#1

http://www.php-mysql-tutorial.com/wikis/mysql-tutorials/using-php-to-backup-mysql-databases.aspx

either

要么

$tableName  = 'mypet';
$backupFile = 'backup/mypet.sql';
$query      = "SELECT * INTO OUTFILE '$backupFile' FROM $tableName";
$result = mysql_query($query);

或

$backupFile = $dbname . date("Y-m-d-H-i-s") . '.gz';
$command = "mysqldump --opt -h $dbhost -u $dbuser -p $dbpass $dbname | gzip >     $backupFile";
system($command);

#2

SAFE and WORKING SOLUTION (latest version at: Export.php + Import.php )

安全有效的解决方案(最新版本在:导出。php +进口。php)

EXPORT_TABLES("localhost","user","pass","db_name"); 
                                                      //or add 5th parameter(array) of specific tables: array("mytable1","mytable2","mytable3")

CODE:

代码:

<?php
//https://github.com/tazotodua/useful-php-scripts
function EXPORT_TABLES($host,$user,$pass,$name,  $tables=false, $backup_name=false ){
    $mysqli = new mysqli($host,$user,$pass,$name); $mysqli->select_db($name); $mysqli->query("SET NAMES 'utf8'");
    $queryTables = $mysqli->query('SHOW TABLES'); while($row = $queryTables->fetch_row()) { $target_tables[] = $row[0]; }   if($tables !== false) { $target_tables = array_intersect( $target_tables, $tables); }
    foreach($target_tables as $table){
        $result = $mysqli->query('SELECT * FROM '.$table);  $fields_amount=$result->field_count;  $rows_num=$mysqli->affected_rows;     $res = $mysqli->query('SHOW CREATE TABLE '.$table); $TableMLine=$res->fetch_row();
        $content = (!isset($content) ?  '' : $content) . "\n\n".$TableMLine[1].";\n\n";
        for ($i = 0, $st_counter = 0; $i < $fields_amount;   $i++, $st_counter=0) {
            while($row = $result->fetch_row())  { //when started (and every after 100 command cycle):
                if ($st_counter%100 == 0 || $st_counter == 0 )  {$content .= "\nINSERT INTO ".$table." VALUES";}
                    $content .= "\n(";
                    for($j=0; $j<$fields_amount; $j++)  { $row[$j] = str_replace("\n","\\n", addslashes($row[$j]) ); if (isset($row[$j])){$content .= '"'.$row[$j].'"' ; }else {$content .= '""';}     if ($j<($fields_amount-1)){$content.= ',';}      }
                    $content .=")";
                //every after 100 command cycle [or at last line] ....p.s. but should be inserted 1 cycle eariler
                if ( (($st_counter+1)%100==0 && $st_counter!=0) || $st_counter+1==$rows_num) {$content .= ";";} else {$content .= ",";} $st_counter=$st_counter+1;
            }
        } $content .="\n\n\n";
    }
    $backup_name = $backup_name ? $backup_name : $name."___(".date('H-i-s')."_".date('d-m-Y').")__rand".rand(1,11111111).".sql";
    header('Content-Type: application/octet-stream');   header("Content-Transfer-Encoding: Binary"); header("Content-disposition: attachment; filename=\"".$backup_name."\"");  echo $content; exit;
}
?>

#3

Here is a nice class that worked just fine for me. if it says fopen access denied, try to change the folder permissions.

这是一门很不错的课，对我来说还不错。如果它说fopen访问被拒绝，试着改变文件夹的权限。

https://github.com/clouddueling/mysqldump-php

#1