Support columns on php handler

Also added some tests for different error messages

ale_linters/php/php.vim

@@ -4,8 +4,9 @@
 function! ale_linters#php#php#Handle(buffer, lines) abort
     " Matches patterns like the following:
     "
-    " Parse error: parse error in - on line 7
-    let l:pattern = 'Parse error:\s\+\(.\+\) on line \(\d\+\)'
+    " PHP Parse error:  syntax error, unexpected ';', expecting ']' in - on line 15
+    let l:pattern = ':\s\+\(.\+unexpected ''\(.\{-}\)''.*\) in - on line \(\d\+\)'
+
     let l:output = []
 
     for l:line in a:lines
@@ -18,9 +19,9 @@ function! ale_linters#php#php#Handle(buffer, lines) abort
         " vcol is needed to indicate that the column is a character.
         call add(l:output, {
         \   'bufnr': a:buffer,
-        \   'lnum': l:match[2] + 0,
+        \   'lnum': l:match[3] + 0,
         \   'vcol': 0,
-        \   'col': 1,
+        \   'col': match(getline(l:match[3]), l:match[2]) + 1,
         \   'text': l:match[1],
         \   'type': 'E',
         \   'nr': -1,

test/test_php_handler.vader

@@ -0,0 +1,59 @@
+Execute(The php handler should parse lines correctly):
+  runtime ale_linters/php/php.vim
+
+  AssertEqual
+  \ [
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 47,
+  \     'vcol': 0,
+  \     'col': 0,
+  \     'text': "syntax error, unexpected ';', expecting ']'",
+  \     'type': 'E',
+  \     'nr': -1,
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 56,
+  \     'vcol': 0,
+  \     'col': 0,
+  \     'text': "syntax error, unexpected '/', expecting function (T_FUNCTION) or const (T_CONST)",
+  \     'type': 'E',
+  \     'nr': -1,
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 13,
+  \     'vcol': 0,
+  \     'col': 0,
+  \     'text': "syntax error, unexpected ')'",
+  \     'type': 'E',
+  \     'nr': -1,
+  \   },
+  \ ],
+  \ ale_linters#php#php#Handle(347, [
+  \   'This line should be ignored completely',
+  \   "PHP Parse error:  syntax error, unexpected ';', expecting ']' in - on line 47",
+  \   "PHP Parse error:  syntax error, unexpected '/', expecting function (T_FUNCTION) or const (T_CONST) in - on line 56",
+  \   'This line should be ignored completely',
+  \   "PHP Parse error:  syntax error, unexpected ')' in - on line 13",
+  \ ])
+
+After:
+  call ale#linter#Reset()
+
+
+Given php(A function call with missing argument delimiters):
+  <?php
+  unset($foo $bar)
+
+Execute(The php handler should find columns correctly):
+  call ale#Lint()
+  call ale#engine#WaitForJobs(2000)
+
+  AssertEqual
+  \ [
+  \   {'group': 'ALEError', 'id': 4, 'pos1': [2, 12, 1], 'priority': 10},
+  \   {'group': 'ALEError', 'id': 5, 'pos1': [2, 12, 1], 'priority': 10}
+  \ ],
+  \ getmatches()