php - Exported Database is Empty -

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I have a code to backup the database using mysqldump though, output There is a file inside the empty data. Below is the script. 

  $ command = "mysqldump -u root -p vti_ctes_demo> db / backupfile.sql"; System ($ command);

mysqldump -u root-p [root_password] [database_name]> dumpfilename.sql < / P>

It seems that you forgot to type the password


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