Use prettier in php

vim/ftplugin/php.vim

@@ -1,6 +1,12 @@
 let g:deoplete#ignore_sources = get(g:, 'deoplete#ignore_sources', {})
 let g:deoplete#ignore_sources.php = ['omni']
 let g:ale_php_phpstan_level = 'max'
+let g:ale_fixers={
+  \'javascript': ['prettier'],
+  \'json': ['prettier'],
+  \'php': ['prettier'],
+\}
+let g:ale_fix_on_save=1
 
 " {{{ phpactor
 " Include use statement