Title: Requests_IPv6::compress
Published: August 16, 2016
Last modified: November 2, 2022

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# Requests_IPv6::compress( string $ip ): string

## In this article

 * [Description](https://developer.wordpress.org/reference/classes/requests_ipv6/compress/?output_format=md#description)
    - [See also](https://developer.wordpress.org/reference/classes/requests_ipv6/compress/?output_format=md#see-also)
 * [Parameters](https://developer.wordpress.org/reference/classes/requests_ipv6/compress/?output_format=md#parameters)
 * [Return](https://developer.wordpress.org/reference/classes/requests_ipv6/compress/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/classes/requests_ipv6/compress/?output_format=md#source)

[ Back to top](https://developer.wordpress.org/reference/classes/requests_ipv6/compress/?output_format=md#wp--skip-link--target)

Compresses an IPv6 address

## 󠀁[Description](https://developer.wordpress.org/reference/classes/requests_ipv6/compress/?output_format=md#description)󠁿

RFC 4291 allows you to compress consecutive zero pieces in an address to ‘::’. This
method expects a valid IPv6 address and compresses consecutive zero pieces to ‘::’.

Example: FF01:0:0:0:0:0:0:101 -> FF01::101 0:0:0:0:0:0:0:1 -> ::1

### 󠀁[See also](https://developer.wordpress.org/reference/classes/requests_ipv6/compress/?output_format=md#see-also)󠁿

 * [uncompress()](https://developer.wordpress.org/reference/functions/uncompress/)

## 󠀁[Parameters](https://developer.wordpress.org/reference/classes/requests_ipv6/compress/?output_format=md#parameters)󠁿

 `$ip`stringrequired

An IPv6 address

## 󠀁[Return](https://developer.wordpress.org/reference/classes/requests_ipv6/compress/?output_format=md#return)󠁿

 string The compressed IPv6 address

## 󠀁[Source](https://developer.wordpress.org/reference/classes/requests_ipv6/compress/?output_format=md#source)󠁿

[View all references](https://developer.wordpress.org/reference/files/wp-includes/requests/ipv6.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/Requests/IPv6.php#L85)

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