This is a very limited bad tool to get the count of functions in PHP files in current dir and sub dirs, excluding version control dirs, unreadable files, all (vendor, tests, Tests) directories
Download latest phar release into your bin dir
$ PhpNumStats.phar | sort -rn
0 | functions found in file 1/1708|autoload.php
5 | functions found in file 2/1708|symfony/polyfill-php72/bootstrap.php
7 | functions found in file 3/1708|symfony/polyfill-php72/Php72.php
40 | functions found in file 4/1708|symfony/polyfill-mbstring/Mbstring.php
37 | functions found in file 5/1708|symfony/polyfill-mbstring/bootstrap.php
0 | functions found in file 6/1708|symfony/polyfill-mbstring/Resources/unidata/lowerCase.php
0 | functions found in file 7/1708|symfony/polyfill-mbstring/Resources/unidata/titleCaseRegexp.php
0 | functions found in file 8/1708|symfony/polyfill-mbstring/Resources/unidata/upperCase.php
1 | functions found in file 9/1708|symfony/filesystem/Exception/FileNotFoundException.php
0 | functions found in file 10/1708|symfony/filesystem/Exception/InvalidArgumentException.php
2 | functions found in file 11/1708|symfony/filesystem/Exception/IOException.php
1 | functions found in file 12/1708|symfony/filesystem/Exception/IOExceptionInterface.php
0 | functions found in file 13/1708|symfony/filesystem/Exception/ExceptionInterface.php
24 | functions found in file 14/1708|symfony/filesystem/Filesystem.php
2 | functions found in file 15/1708|symfony/filesystem/Tests/Fixtures/MockStream/MockStream.php
You can use it with other Linux tools like "sort",
for example to get files ordered descendant
$ PhpNumStats.phar | sort -rn | head
164 | functions found in file 823/1320|nikic/php-parser/lib/PhpParser/PrettyPrinter/Standard.php
162 | functions found in file 1140/1320|phpunit/phpunit/src/Framework/Assert/Functions.php
156 | functions found in file 1145/1320|phpunit/phpunit/src/Framework/Assert.php
122 | functions found in file 1151/1320|phpunit/phpunit/src/Framework/TestCase.php
78 | functions found in file 495/1320|webmozart/assert/src/Assert.php
66 | functions found in file 345/1320|symfony/dependency-injection/ContainerBuilder.php
61 | functions found in file 1147/1320|phpunit/phpunit/src/Framework/TestResult.php
59 | functions found in file 410/1320|symfony/dependency-injection/Definition.php
44 | functions found in file 341/1320|symfony/dependency-injection/Dumper/PhpDumper.php
The command output is awk and command line friendly,
because I did not have time to add any options at all
the project is licensed under BSD 3-Clause License