# JSON.ARRPOP

```json metadata
{
  "title": "JSON.ARRPOP",
  "description": "Removes and returns the element at the specified index in the array at path",
  "categories": ["docs","develop","stack","oss","rs","rc","oss","kubernetes","clients"],
  "arguments": [{"name":"key","type":"key"},{"arguments":[{"name":"path","type":"string"},{"name":"index","optional":true,"type":"integer"}],"name":"path","optional":true,"type":"block"}],
  "syntax_fmt": "JSON.ARRPOP key [path [index]]",
  "complexity": "O(N) when path is evaluated to a single value where N is the size of the array and the specified index is not the last element, O(1) when path is evaluated to a single value and the specified index is the last element, or O(N) when path is evaluated to multiple values, where N is the size of the key",
  "group": "json",
  "acl_categories": ["@json","@write","@slow"],
  "since": "1.0.0",
  "tableOfContents": {"sections":[{"id":"required-arguments","title":"Required arguments"},{"id":"optional-arguments","title":"Optional arguments"},{"id":"examples","title":"Examples"},{"id":"redis-enterprise-and-redis-cloud-compatibility","title":"Redis Enterprise and Redis Cloud compatibility"},{"id":"return-information","title":"Return information"},{"id":"see-also","title":"See also"},{"id":"related-topics","title":"Related topics"}]}
}
```













Remove and return an element from the index in the array

[Examples](#examples)

## Required arguments

<details open><summary><code>key</code></summary> 

is key to modify.
</details>

<details open><summary><code>index</code></summary> 

is position in the array to start popping from. Default is `-1`, meaning the last element. Out-of-range indexes round to their respective array ends. Popping an empty array returns null.
</details>

## Optional arguments

<details open><summary><code>path</code></summary> 

is JSONPath to specify. Default is root `$`.
</details>

## Examples

<details open>
<summary><b>Pop a value from an index and insert a new value</b></summary>

Create two headphone products with maximum sound levels.


redis> JSON.SET key $ '[{"name":"Healthy headphones","description":"Wireless Bluetooth headphones with noise-cancelling technology","connection":{"wireless":true,"type":"Bluetooth"},"price":99.98,"stock":25,"colors":["black","silver"],"max_level":[60,70,80]},{"name":"Noisy headphones","description":"Wireless Bluetooth headphones with noise-cancelling technology","connection":{"wireless":true,"type":"Bluetooth"},"price":99.98,"stock":25,"colors":["black","silver"],"max_level":[80,90,100,120]}]'
OK


Get all maximum values for the second product.


redis> JSON.GET key $.[1].max_level
"[[80,90,100,120]]"


Update the `max_level` field of the product: remove an unavailable value and add a newly available value.


redis> JSON.ARRPOP key $.[1].max_level 0
1) "80"


Get the updated array.


redis> JSON.GET key $.[1].max_level
"[[90,100,120]]"


Now insert a new lowest value.


redis> JSON.ARRINSERT key $.[1].max_level 0 85
1) (integer) 4


Get the updated array.


redis> JSON.GET key $.[1].max_level
"[[85,90,100,120]]"

</details>

## Redis Enterprise and Redis Cloud compatibility

| Redis<br />Enterprise | Redis<br />Cloud | <span style="min-width: 9em; display: table-cell">Notes</span> |
|:----------------------|:-----------------|:------|
| <span title="Supported">&#x2705; Supported</span><br /> | <span title="Supported">&#x2705; Flexible & Annual</span><br /><span title="Supported">&#x2705; Free & Fixed</nobr></span> |  |

## Return information

{{< multitabs id="json-arrpop-return-info"
    tab1="RESP2"
    tab2="RESP3" >}}

[Array reply](https://redis.io/docs/latest/develop/reference/protocol-spec#arrays) of [bulk string replies](https://redis.io/docs/latest/develop/reference/protocol-spec#bulk-strings) or [null replies](https://redis.io/docs/latest/develop/reference/protocol-spec#nulls), where each element is the popped JSON value as a string, or `null` if the matching value is not an array.

-tab-sep-

[Array reply](https://redis.io/docs/latest/develop/reference/protocol-spec#arrays) of [bulk string replies](https://redis.io/docs/latest/develop/reference/protocol-spec#bulk-strings) or [null replies](https://redis.io/docs/latest/develop/reference/protocol-spec#nulls), where each element is the popped JSON value as a string, or `null` if the matching value is not an array.



## See also

[`JSON.ARRAPPEND`](https://redis.io/docs/latestcommands/json.arrappend/) | [`JSON.ARRINDEX`](https://redis.io/docs/latestcommands/json.arrindex/) 

## Related topics

* [RedisJSON](https://redis.io/docs/latest/develop/data-types/json/)
* [Index and search JSON documents](https://redis.io/docs/latest/develop/ai/search-and-query/indexing/)