This bug was fixed in the package php-text-captcha - 1.0.2-2ubuntu1
--------------- php-text-captcha (1.0.2-2ubuntu1) xenial; urgency=medium
* Update to PHP7.0 dependencies (LP: #1565065).
-- Nishanth Aravamudan <email address hidden> Fri, 01 Apr 2016 12:52:19 -0700
This bug was fixed in the package php-text-captcha - 1.0.2-2ubuntu1
---------------
php-text-captcha (1.0.2-2ubuntu1) xenial; urgency=medium
* Update to PHP7.0 dependencies (LP: #1565065).
-- Nishanth Aravamudan <email address hidden> Fri, 01 Apr 2016 12:52:19 -0700