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[docs] hooks: Clarify the execution order and priorities. #1458

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[docs] hooks: Clarify the execution order and priorities. #1458

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11 changes: 9 additions & 2 deletions docs/apis/core/hooks/index.md
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Expand Up @@ -291,8 +291,15 @@ Support for Array notated callbacks was introduced in Moodle 4.4. If you are wri

:::

Hook callbacks are executed in the order of their priority from highest to lowest.
Any guidelines for callback priority should be described in hook descriptions if necessary.
### Hook Callback Execution Order

Hook callbacks are executed according to their priority, in **descending order** — from the **highest number** to the **lowest**.

- **Default priority:** `100`
- **Higher numbers:** executed **earlier**
- **Lower numbers (down to 0):** executed **later**

If a particular hook requires callbacks to run in a specific order, its documentation should include guidelines on what priorities to use.

:::caution

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