Linter addition of PHP Mess Detector

ale_linters/php/phpmd.vim

@@ -0,0 +1,41 @@
+" Author: medains <https://github.com/medains>
+" Description: phpmd for PHP files
+
+" Set to change the ruleset
+let g:ale_php_phpmd_ruleset = get(g:, 'ale_php_phpmd_ruleset', 'cleancode,codesize,controversial,design,naming,unusedcode')
+
+function! ale_linters#php#phpmd#Handle(buffer, lines) abort
+    " Matches against lines like the following:
+    "
+    " /path/to/some-filename.php:18 message
+    let l:pattern = '^.*:\(\d\+\)\t\(.\+\)$'
+    let l:output = []
+
+    for l:line in a:lines
+        let l:match = matchlist(l:line, l:pattern)
+
+        if len(l:match) == 0
+            continue
+        endif
+
+        " vcol is Needed to indicate that the column is a character.
+        call add(l:output, {
+        \   'bufnr': a:buffer,
+        \   'lnum': l:match[1] + 0,
+        \   'vcol': 0,
+        \   'col': 0,
+        \   'text': l:match[2],
+        \   'type': 'W',
+        \   'nr': -1,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('php', {
+\   'name': 'phpmd',
+\   'executable': 'phpmd',
+\   'command': g:ale#util#stdin_wrapper . ' .php phpmd %s text ' . g:ale_php_phpmd_ruleset . ' --ignore-violations-on-exit',
+\   'callback': 'ale_linters#php#phpmd#Handle',
+\})