How do You Delete all database entries without damaging the database structure?
eg.

Table name is "blob"
And it currently holds 15 records of people who eat apples.

I want to be able to delete those 15 records through php.

Tried some ways, but nothing worked.

PHP Code:

mysql_query("TRUNCATE tablename"); 


doesnt work.

Basically, I want it to empty the Table, and then refill it with updated information.

"DELETE FROM tablename"