Solve : help w/procedure?

1.	Solve : help w/procedure?
Answer» I'm coding up a billing doc. If an ACCOUNT# owes for several purchases this month, I want to print one PAGE (consolidate MULTIPLE invoices) per account number? What is the most effective way to approach this (PHP)? a way to compare acct#.We are going to need a lot more information such as how the rest of the APPLICATION is built along with how the data is STORED.

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