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Vendor somework
Package offset-page-logic
Short Description Utility functions to convert offset/limit requests into page/page-size arguments
License MIT
Homepage https://github.com/somework/offset-page-logic

Keywords page pagination converter limit offset

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Informations about the package offset-page-logic

Offset Page Logic

Author: Igor Pinchuk Email: [email protected]

Utility functions to convert offset/limit requests into page/page-size arguments.

Installation

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Usage

Offset::logic() returns a DTO containing the calculated page (1-based) and page size for the given offset and limit. The method also guards against requesting more rows than are available. All inputs are strict integers; negative values are coerced to 0.

Behavior

Offset::logic() branches through several scenarios to normalize offset/limit inputs into page-based pagination:

Zeroed inputs – if offset, limit, and nowCount are all 0, the method returns page 0 and size 0, representing a request for “everything” without pagination.
Limit-only – with offset at 0, a positive limit sets the page size while the page is 1.
Offset-only – with limit at 0, a positive offset yields page 2 and a size of offset + nowCount (the offset is always at least the page size).
Limit exceeds current count – when nowCount is positive and smaller than the requested limit, the method recurses by subtracting nowCount from limit and adding it to offset, then resolves the pagination with the remaining values.
Standard offset/limit division – when both are positive and nowCount is 0, the page and size are derived from offset divided by limit, using the largest divisor of the offset to maximize page size.
AlreadyGetNeededCountException condition – if nowCount is positive and not less than the requested limit, the method throws AlreadyGetNeededCountException to signal that all required rows are already retrieved.

Offset	Limit	nowCount	Outcome	Notes
`0`	`0`	`0`	Page `0`, Size `0`	Zeroed inputs return a sentinel “all rows” response.
`0`	`10`	`0`	Page `1`, Size `10`	Limit-only scenario with a page starting at `1`.
`22`	`0`	`0`	Page `2`, Size `22`	Offset-only scenario; size grows with the offset.
`0`	`22`	`10`	Page `2`, Size `10`	Limit exceeds `nowCount`; recursion reduces the limit.
`44`	`22`	`0`	Page `3`, Size `22`	Standard offset/limit division (`44/22 + 1`).
`0`	`5`	`5`	Throws `AlreadyGetNeededCountException`	Requested limit is already satisfied by `nowCount`.

If the requested limit is already satisfied by nowCount, an exception is thrown:

Development

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License

MIT

Maintained by

Igor Pinchuk — I work on legacy PHP and Symfony systems: audits, rescue and refactoring, performance. My open-source packages have been installed over 70,000 times on Packagist.

Inherited a codebase nobody wants to touch? Written questions get written answers — no discovery call required. [email protected] · LinkedIn

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Version 2.0.0 Release 04. Dec 2025
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