WordPress at a glance
function is not described

WP_Http_Encoding::is_available() public WP 2.8.0

Whether decompression and compression are supported by the PHP version.

Each function is tested instead of checking for the zlib extension, to ensure that the functions all exist in the PHP version and aren't disabled.

{} It's a method of the class: WP_Http_Encoding{}

No Hooks.

Return

true|false. Null. Nothing.

Usage

$result = WP_Http_Encoding::is_available();

Changelog

Since 2.8.0 Introduced.

Code of WP_Http_Encoding::is_available() WP 5.7.1

<?php
public static function is_available() {
	return ( function_exists( 'gzuncompress' ) || function_exists( 'gzdeflate' ) || function_exists( 'gzinflate' ) );
}