unable to get the extension

[medilies]

WARNING: channel "pecl.php.net" has updated its protocols, use "pecl channel-update pecl.php.net" to update
downloading Mosquitto-0.4.0.tgz ...
Starting to download Mosquitto-0.4.0.tgz (23,804 bytes)
........done: 23,804 bytes

Fatal error: Cannot use result of built-in function in write context in C:\xampp\php\pear\Archive\Tar.php on line 639

• I changed line 639 by deleting &
• also changed line 1932 to continue 2;

and the errors are still endless ...
is there another solution to get this extension ?