Please Help Me

Hello
Please help me.
I want to empty some tables of one of my databases every 1 hour.
Now i want to create a php file and set cronjob for it to do it.
But i dont know how to write codes for php file.
I want it:
For example i want that table1,table2 and table3 from database1 to be emptied every 1 hour. Please write php code for me.
Thanks in advance.

 

mysql_query("TRUNCATE TABLE table") or die(mysql_error());

PHP:

 

Thanks a lot. But can you please write php code according to my example?
table1,table2 and table3 from database1 to be emptied

 

Any one can't help me more?
I am waiting for experts to help me.

 

you can create array for tabel names

$tables=array("table1","table2","table3",...);
foreach ($tables as $table) {
mysql_query("TRUNCATE TABLE $table") or die(mysql_error());
}