2. PSR-2 --- 代码风格指南

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1. 概述

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2. 通则

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3. 命名空间(Namespace)和导入(Use)声明

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4. 类(class)，属性(property)和方法(method)

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5. 控制结构

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6. 闭包

<?php$longArgs_noVars = function (    $longArgument,    $longerArgument,    $muchLongerArgument) {   // body};$noArgs_longVars = function () use (    $longVar1,    $longerVar2,    $muchLongerVar3) {   // body};$longArgs_longVars = function (    $longArgument,    $longerArgument,    $muchLongerArgument) use (    $longVar1,    $longerVar2,    $muchLongerVar3) {   // body};$longArgs_shortVars = function (    $longArgument,    $longerArgument,    $muchLongerArgument) use ($var1) {   // body};$shortArgs_longVars = function ($arg) use (    $longVar1,    $longerVar2,    $muchLongerVar3) {   // body};

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7. 结论

https://segmentfault.com/a/1190000002521620