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Example to override a value that is an array.

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Add an example for how to override a configuration value that has is array.
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Federico Jaramillo Martínez 2018-10-11 10:09:40 -05:00 committed by GitHub
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docs/en/02_Developer_Guides/04_Configuration/00_Configuration.md
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@ -156,7 +156,21 @@ rules:
- If the value is an array, each array is added to the _beginning_ of the composite array in ascending priority order.
If a higher priority item has a non-integer key which is the same as a lower priority item, the value of those items
is merged using these same rules, and the result of the merge is located in the same location the higher priority item
would be if there was no key clash. Other than in this key-clash situation, within the particular array, order is preserved.
would be if there was no key clash. Other than in this key-clash situation, within the particular array, order is preserved. To override a value that is an array, the value must first be set to `null`, and then set again to the new array.
```yml
---
Name: rulereset
---
Class\With\Array\Config:
an_array: null
---
Name: rule
---
Class\With\Array\Config:
an_array: ['value_a', 'value_b']
---
```
- If the value is not an array, the highest priority value is used without any attempt to merge