导出SQL数据库

Question

在phpMyAdmin中，可以将整个表（或数据库）导出到.SQL文件中。

我无法弄清楚它们是如何做到这一点的 - 因为我想将它粘贴到CRON作业中来制作数据库的每日和每周备份。但似乎没有任何一个单一的命令能够实现 - 在那里？

Answer 1

使用mysqldump

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

主机是可选的，如果主机是localhost。取决于某些设置，用户和密码也可以是可选的。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，虽然使用它的服务器访问。此外，如果您感觉冒险，并希望保持一致的备份，请查看有关主/从设置的信息。

Answer 3

您可以创建一个shell脚本并通过cron作业调用该脚本。 看到这个工作Example

Answer 4

您可以运行使用PHP这些命令，下面这段代码复制到一个文件，并用cron作业执行它。

<?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; 
} 
?>