Mysqldump in amazon using PHP

Question

I want to have a database backup our database is hosted in amazon rds. My problem in everytime i run my PHP script it generates an sql file but it is empty.

Here is my code:

exec("/usr/bin/mysqldump -u *username* -p *password* | gzip > /var/www/html/db-backup/testdb.sql.gz");

Answer 1

I think that you need to specify which database you want to backup

exec("/usr/bin/mysqldump -u *username* -p*password* *dbname* | gzip > /var/www/html/db-backup/testdb.sql.gz");

and you have to specify password next to -p parameter without space (mysqldump -u youruser -pyourpassword -h yourhostname yourdatabase)