PHP 7.1安装solr.so失败，但PHP 7.0成功

I get the following error during PHP Solr PECL Extension installation on version 7.1:

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/20160303/solr.so' - /usr/lib/php/20160303/solr.so: undefined symbol: zval_used_for_init in Unknown on line 0

Full trace:

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/20160303/solr.so' - /usr/lib/php/20160303/solr.so: undefined symbol: zval_used_for_init in Unknown on line 0
PHP 7.1.0-3+deb.sury.org~trusty+1 (cli) ( NTS )
Copyright (c) 1997-2016 The PHP Group
Zend Engine v3.1.0-dev, Copyright (c) 1998-2016 Zend Technologies
    with Zend OPcache v7.1.0-3+deb.sury.org~trusty+1, Copyright (c) 1999-2016, by Zend Technologies
    with Xdebug v2.5.0, Copyright (c) 2002-2016, by Derick Rethans

On version 7.0 everything installs correctly.