Preposition
as per
Consistent, or in accordance, with; according to
There is the old catch-22 line that a mentally unstable person can't know, as per their illness, that they are unstable. But that was wrong. You can and do have the insight to see your own crazy. Harlan Coben
As per the age-old Customs and Central Excise Rules 1967, a person is allowed to carry only Rs 20,000 worth of gold. Vayalar Ravi
In places which are sacked and looted the captives are selected as per royal regulations. Those fit for royal service (alone) are sent to the court. Firuz Shah Tughlaq