Editorconfig for PHP PSR-4

.editorconfig

# EditorConfig is awesome: http://EditorConfig.org

# top-most EditorConfig file
root = true

# All PHP files MUST use the Unix LF (linefeed) line ending.
# Code MUST use an indent of 4 spaces, and MUST NOT use tabs for indenting.
# All PHP files MUST end with a single blank line.
# There MUST NOT be trailing whitespace at the end of non-blank lines.
[*]
charset = utf-8
end_of_line = lf
insert_final_newline = true
trim_trailing_whitespace = true

# PHP-Files, Composer.json, MD-Files
[{*.php,composer.json,*.md}]
indent_style = space
indent_size = 4

# HTML-Files LESS-Files SASS-Files CSS-Files JS-Files JSON-Files
[{*.html,*.less,*.sass,*.css,*.js,*.json}]
indent_style = tab
indent_size = 4

# Gitlab-CI, Travis-CI
[*.yml]
indent_style = space
indent_size = 2