導出SQL數據庫

Question

在phpMyAdmin中，可以將整個表（或數據庫）導出到.SQL文件中。

我無法弄清楚它們是如何做到這一點的 - 因爲我想將它粘貼到CRON作業中來製作數據庫的每日和每週備份。但似乎沒有任何一個單一的命令能夠實現 - 在那裏？

Answer 1

使用mysqldump

mysqldump -h hostname -u user -pPassword dbname >/path/to/file 

主機是可選的，如果主機是localhost。取決於某些設置，用戶和密碼也可以是可選的。注意您可能要添加的日期名

mysqldump -h hostname -u root mydb > /path/to/backup/$(date +%a) 

Answer 2

呀，mysqldump的：http://linuxcommand.org/man_pages/mysqldump1.html

你需要有，雖然使用它的服務器訪問。此外，如果您感覺冒險，並希望保持一致的備份，請查看有關主/從設置的信息。

Answer 3

您可以創建一個shell腳本並通過cron作業調用該腳本。 看到這個工作Example

Answer 4

您可以運行使用PHP這些命令，下面這段代碼複製到一個文件，並用cron作業執行它。

<?php 

//Backup: 

//ENTER THE RELEVANT INFO BELOW 
$mysqlDatabaseName ='databasename'; 
$mysqlUserName ='username'; 
$mysqlPassword ='password'; 
$mysqlHostName ='localhost'; 
//$mysqlExportPath ='database.sql'; 

$mysqlImportFilename ='myownsit_obsolcms.sql'; 

//DONT EDIT BELOW THIS LINE 
//Export the database and output the status to the page 
$command='mysql -h' .$mysqlHostName .' -u' .$mysqlUserName .' -p' .$mysqlPassword .' ' .$mysqlDatabaseName .' < ' .$mysqlImportFilename; 
exec($command,$output=array(),$worked); 
switch($worked){ 
    case 0: 
     echo 'Import file <b>' .$mysqlImportFilename .'</b> successfully imported to database <b>' .$mysqlDatabaseName .'</b>'; 
     break; 
    case 1: 
     echo 'There was an error during import. Please make sure the import file is saved in the same folder as this script and check your values:<br/><br/><table><tr><td>MySQL Database Name:</td><td><b>' .$mysqlDatabaseName .'</b></td></tr><tr><td>MySQL User Name:</td><td><b>' .$mysqlUserName .'</b></td></tr><tr><td>MySQL Password:</td><td><b>NOTSHOWN</b></td></tr><tr><td>MySQL Host Name:</td><td><b>' .$mysqlHostName .'</b></td></tr><tr><td>MySQL Import Filename:</td><td><b>' .$mysqlImportFilename .'</b></td></tr></table>'; 
     break; 
} 



//Restore: 
$mysqlExportPath ='path_to_file/database.sql'; 

//DONT EDIT BELOW THIS LINE 
//Export the database and output the status to the page 
$command='mysqldump --opt -h' .$mysqlHostName .' -u' .$mysqlUserName .' -p' .$mysqlPassword .' ' .$mysqlDatabaseName .' admin contents categires google_map cms_labels news pages page_contents partners photos plugins products social testimonials themes users youtube> ~/' .$mysqlExportPath; 
//$command = "$ mysqldump -u $mysqlUserName -p $mysqlPassword $mysqlDatabaseName > myownsit_obsolcms.sql"; 
exec($command,$output=array(),$worked); 
switch($worked){ 
    case 0: 
     //echo 'Database <b>' .$mysqlDatabaseName .'</b> successfully exported to <b>~/' .$mysqlExportPath .'</b>'; 
     break; 
    case 1: 
     echo 'There was a warning during the export of <b>' .$mysqlDatabaseName .'</b> to <b>~/' .$mysqlExportPath .'</b>'; 
     break; 
    case 2: 
     echo 'There was an error during export. Please check your values:<br/><br/><table><tr><td>MySQL Database Name:</td><td><b>' .$mysqlDatabaseName .'</b></td></tr><tr><td>MySQL User Name:</td><td><b>' .$mysqlUserName .'</b></td></tr><tr><td>MySQL Password:</td><td><b>NOTSHOWN</b></td></tr><tr><td>MySQL Host Name:</td><td><b>' .$mysqlHostName .'</b></td></tr></table>'; 
     break; 
} 
?>