Seen on travis on PHP 7.2 <https://travis-ci.org/wikimedia/mediawiki/jobs/368430010>
* 30 December 2017: 8x errors for "Parameter must be an array or an object that implements Countable"
* 18 April 2018: 11x errors for "Parameter must be an array or an object that implements Countable"
```lines=20
1) ApiUserrightsTest::testAdd
count(): Parameter must be an array or an object that implements Countable
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:462
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:405
/home/travis/build/wikimedia/mediawiki/includes/api/ApiUserrights.php:116
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:1579
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:504
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:144
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:173
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:68
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:120
/home/travis/build/wikimedia/mediawiki/tests/phpunit/MediaWikiTestCase.php:421
2) ApiUserrightsTest::testBlockedWithUserrights
count(): Parameter must be an array or an object that implements Countable
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:462
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:405
/home/travis/build/wikimedia/mediawiki/includes/api/ApiUserrights.php:116
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:1579
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:504
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:144
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:173
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:68
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:130
/home/travis/build/wikimedia/mediawiki/tests/phpunit/MediaWikiTestCase.php:421
3) ApiUserrightsTest::testAddMultiple
count(): Parameter must be an array or an object that implements Countable
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:462
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:405
/home/travis/build/wikimedia/mediawiki/includes/api/ApiUserrights.php:116
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:1579
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:504
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:144
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:173
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:68
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:156
/home/travis/build/wikimedia/mediawiki/tests/phpunit/MediaWikiTestCase.php:421
4) ApiUserrightsTest::testWebToken
count(): Parameter must be an array or an object that implements Countable
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:462
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:405
/home/travis/build/wikimedia/mediawiki/includes/api/ApiUserrights.php:116
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:1579
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:504
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:144
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:239
/home/travis/build/wikimedia/mediawiki/tests/phpunit/MediaWikiTestCase.php:421
5) ApiUserrightsTest::testAddAndRemoveGroups with data set "Simple add" (array(array('sysop'), array()), array(array('sysop'), array()), array('bot', 'sysop'))
count(): Parameter must be an array or an object that implements Countable
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:462
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:405
/home/travis/build/wikimedia/mediawiki/includes/api/ApiUserrights.php:116
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:1579
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:504
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:144
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:173
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:68
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:315
/home/travis/build/wikimedia/mediawiki/tests/phpunit/MediaWikiTestCase.php:421
6) ApiUserrightsTest::testAddAndRemoveGroups with data set "Simple remove" (array(array(), array('bot')), array(array(), array('bot')), array())
count(): Parameter must be an array or an object that implements Countable
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:462
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:405
/home/travis/build/wikimedia/mediawiki/includes/api/ApiUserrights.php:116
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:1579
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:504
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:144
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:173
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:68
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:315
/home/travis/build/wikimedia/mediawiki/tests/phpunit/MediaWikiTestCase.php:421
7) ApiUserrightsTest::testAddAndRemoveGroups with data set "Add and remove same new group" (null, array(array('sysop'), array('sysop')), array('bot', 'sysop'))
count(): Parameter must be an array or an object that implements Countable
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:462
/home/travis/build/wikimedia/mediawiki/includes/specials/SpecialUserrights.php:405
/home/travis/build/wikimedia/mediawiki/includes/api/ApiUserrights.php:116
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:1579
/home/travis/build/wikimedia/mediawiki/includes/api/ApiMain.php:504
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:144
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiTestCase.php:173
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:68
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/api/ApiUserrightsTest.php:315
/home/travis/build/wikimedia/mediawiki/tests/phpunit/MediaWikiTestCase.php:421
8) DBConnRefTest::testConstruct_failure
count(): Parameter must be an array or an object that implements Countable
/home/travis/build/wikimedia/mediawiki/includes/libs/rdbms/database/DBConnRef.php:36
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/libs/rdbms/database/DBConnRefTest.php:106
/home/travis/build/wikimedia/mediawiki/maintenance/doMaintenance.php:94
9) BitmapMetadataHandlerTest::testMultilingualCascade
count(): Parameter must be an array or an object that implements Countable
/home/travis/build/wikimedia/mediawiki/includes/media/Exif.php:745
/home/travis/build/wikimedia/mediawiki/includes/media/Exif.php:336
/home/travis/build/wikimedia/mediawiki/includes/media/Exif.php:308
/home/travis/build/wikimedia/mediawiki/includes/media/BitmapMetadataHandler.php:91
/home/travis/build/wikimedia/mediawiki/includes/media/BitmapMetadataHandler.php:187
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/media/BitmapMetadataHandlerTest.php:32
/home/travis/build/wikimedia/mediawiki/tests/phpunit/MediaWikiTestCase.php:421
/home/travis/build/wikimedia/mediawiki/maintenance/doMaintenance.php:94
10) ExifTest::testGPSExtraction
count(): Parameter must be an array or an object that implements Countable
/home/travis/build/wikimedia/mediawiki/includes/media/Exif.php:745
/home/travis/build/wikimedia/mediawiki/includes/media/Exif.php:336
/home/travis/build/wikimedia/mediawiki/includes/media/Exif.php:308
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/media/ExifTest.php:24
/home/travis/build/wikimedia/mediawiki/tests/phpunit/MediaWikiTestCase.php:421
/home/travis/build/wikimedia/mediawiki/maintenance/doMaintenance.php:94
11) ExifTest::testUnicodeUserComment
count(): Parameter must be an array or an object that implements Countable
/home/travis/build/wikimedia/mediawiki/includes/media/Exif.php:745
/home/travis/build/wikimedia/mediawiki/includes/media/Exif.php:336
/home/travis/build/wikimedia/mediawiki/includes/media/Exif.php:308
/home/travis/build/wikimedia/mediawiki/tests/phpunit/includes/media/ExifTest.php:39
/home/travis/build/wikimedia/mediawiki/tests/phpunit/MediaWikiTestCase.php:421
/home/travis/build/wikimedia/mediawiki/maintenance/doMaintenance.php:94
```