add phpcbf fixer

doc/ale-php.txt

@@ -94,5 +94,35 @@ g:ale_php_phpstan_level                               *g:ale_php_phpstan_level*
   This variable controls the rule levels. 0 is the loosest and 4 is the
   strictest.
 
+
+-------------------------------------------------------------------------------
+phpcbf                                                         *ale-php-phpcbf*
+
+g:ale_php_phpcbf_executable                       *g:ale_php_phpcbf_executable*
+                                                  *b:ale_php_phpcbf_executable*
+  Type: |String|
+  Default: `'phpcbf'`
+
+  See |ale-integrations-local-executables|
+
+
+g:ale_php_phpcbf_standard                           *g:ale_php_phpcbf_standard*
+                                                    *b:ale_php_phpcbf_standard*
+  Type: |String|
+  Default: `''`
+
+  This variable can be set to specify the coding standard used by phpcbf. If no
+  coding standard is specified, phpcbf will default to fixing against the
+  PEAR coding standard, or the standard you have set as the default.
+
+
+g:ale_php_phpcbf_use_global                       *g:ale_php_phpcbf_use_global*
+                                                  *b:ale_php_phpcbf_use_global*
+  Type: |Number|
+  Default: `0`
+
+  See |ale-integrations-local-executables|
+
+
 ===============================================================================
   vim:tw=78:ts=2:sts=2:sw=2:ft=help:norl:

doc/ale.txt

@@ -83,6 +83,7 @@ CONTENTS                                                         *ale-contents*
       phpcs...............................|ale-php-phpcs|
       phpmd...............................|ale-php-phpmd|
       phpstan.............................|ale-php-phpstan|
+      phpcbf..............................|ale-php-phpcbf|
     pug...................................|ale-pug-options|
       puglint.............................|ale-pug-puglint|
     python................................|ale-python-options|
@@ -210,7 +211,7 @@ The following languages and tools are supported.
 * Objective-C++: 'clang'
 * OCaml: 'merlin' (see |ale-ocaml-merlin|)
 * Perl: 'perl' (-c flag), 'perlcritic'
-* PHP: 'hack', 'langserver', 'php' (-l flag), 'phpcs', 'phpmd', 'phpstan'
+* PHP: 'hack', 'langserver', 'php' (-l flag), 'phpcs', 'phpmd', 'phpstan', 'phpcbf'
 * Pod: 'proselint'
 * Pug: 'pug-lint'
 * Puppet: 'puppet', 'puppet-lint'