摘要：在合作開發時需要統一下，如給寫時一些如得按照字母順序來寫，等等。推薦一個，該是作者寫的，質量有保證。每一個的定義可以參考的主頁。

在合作開發時需要統一下code style，如給method寫annotation時一些tag如@params ,@throw,@return得按照字母順序來寫，等等。推薦一個package:friendsofphp/php-cs-fixer，該package是Symfony作者寫的，質量有保證。
安裝下該package:

composer require friendsofphp/php-cs-fixer --dev

然后項目根目錄創建一個可執行文件如.cs文件：

#!/bin/bash

vendor/bin/php-cs-fixer fix

以后在項目根目錄只需執行./cs就可以自動修復不復合規定code style的代碼，code rules的定義在該package packgist的網站上有說明。vendor/bin/php-cs-fixer fix會讀取.php_cs文件返回的code rules，所以還得定義哪些code rules，同樣在項目根目錄中新建文件.php_cs，然后加上code rules，如:

exclude("bootstrap")
            ->exclude("database")
            ->exclude("public")
            ->exclude("resources")
            ->exclude("storage")
            ->exclude("vendor")
            ->notPath(".phpstorm.meta.php")
            ->notPath("_ide_helper.php")
            ->notPath("server.php")
            ->in(__DIR__);

return SymfonyCSConfig::create()
    ->level(SymfonyCSFixerInterface::PSR2_LEVEL)
    ->fixers([
    // Use all symfony fixers but the following "-"."fixer".

        // Exclude psr-0
        "-psr0",

        // Concatenation should be used without spaces.
        "-concat_without_spaces",

        // A return statement wishing to return nothing should be simply "return".
        "-empty_return",

        // Remove useless semicolon statements.
        "-no_empty_comment",

        // Binary operators should be surrounded by at least one space.
        "-operators_spaces",

        // Phpdocs annotation descriptions should not end with a full stop.
        "-phpdoc_annotation_without_dot",

        // @return void and @return null annotations should be omitted from phpdocs.
        "-phpdoc_no_empty_return",

        // @package and @subpackage annotations should be omitted from phpdocs.
        "-phpdoc_no_package",

        // All items of the @param, @throws, @return, @var, and @type phpdoc tags must be aligned vertically.
        "-phpdoc_params",

        // Annotations in phpdocs should be grouped together so that annotations of the same type immediately follow each other,
        // and annotations of a different type are separated by a single blank line.
        "-phpdoc_separation",

        // Phpdocs short descriptions should end in either a full stop, exclamation mark, or question mark.
        "-phpdoc_short_description",

        // Docblocks should only be used on structural elements.
        "-phpdoc_to_comment",

        // Pre incrementation/decrementation should be used if possible.
        "-pre_increment",

        // Unalign double arrow symbols.
        "-unalign_double_arrow",

        // Unalign equals symbols.
        "-unalign_equals",

    // Use all the following fixers.
        // Align double arrow symbols in consecutive lines.
        "align_double_arrow",

        // Align equals symbols in consecutive lines.
        "align_equals",

        // Concatenation should be used with at least one whitespace around.
        "concat_with_spaces",

        // Replace deprecated ereg regular expression functions with preg.
        "ereg_to_preg",

        // Add, replace or remove header comment.
        // "header_comment",

        // Multi-line whitespace before closing semicolon are prohibited.
        "multiline_spaces_before_semicolon",

        // Ensure there is no code on the same line as the PHP open tag.
        "newline_after_open_tag",

        // There should not be an empty return statement at the end of a function.
        "no_useless_return",

        // Ordering use statements.
        "ordered_use",

        // Convert PHP4-style constructors to __construct.
        "php4_constructor",

        // PHPUnit assertion method calls like "->assertSame(true, $foo)" should be written with dedicated method like "->assertTrue($foo)".
        "php_unit_construct",

        // PHPUnit methods like "assertSame" should be used instead of "assertEquals".
        "php_unit_strict",

        // Annotations in phpdocs should be ordered so that param annotations come first,
        // then throws annotations, then return annotations.
        "phpdoc_order",

        // PHP arrays should use the PHP 5.4 short-syntax.
        "short_array_syntax",

        // Replace short-echo finder($finder)
    ->setUsingCache(true);

code rules可以添加或刪除，需要團隊統一，一般至少盡量符合PSR-2的大部分標準。每一個code rule的定義可以參考package packgist的主頁。

這樣，團隊里以后每次push code前先./cs下：

當然，還應當在PHPStorm IDE里的Preference->Editor->Code Style->PHP里也設置同樣的code rules，然后導出一個xml文件，方便在團隊里共享并導入到每個開發者的PHPStorm，這樣保證團隊的每一個Code Style保持相同。