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PHP编码规范简析

Jun 13, 2016 am 10:17 AM
php tab one for use Tabs unit control space coding indentation rule specification key length


一、书写规则

1->缩进。使用制表符(键)缩进,缩进单位为4个空格。单行长度控制在80个字符之内,如果感觉太长另起一行,在合理位置断开,缩进8个字符,以区分正常缩进。

2->大括号{}。将大括号放到关键字的同行(下方)、同列。以下两种方式皆可。

<span //</span><span 第一种方式</span>
<span if</span><span  ($expr)  
{
  ...
}
</span><span //</span><span 第二种方式</span>
<span if</span><span  ($expr){  
  ...
}</span>
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3->关键字、小括号、函数、运算符。小括号与关键字用一空格隔开,小括号与函数要紧贴在一起,以便区分关键字和函数。运算符与两边的变量或表达式要有一个空格(字符链接运算符“.”除外。

<span while</span>($boo == <span true</span>){                 <span //</span><span $boo和&ldquo;==&rdquo;,true和&ldquo;==&rdquo;之间都有一个空格</span>
<span         ...
}</span>
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4->当代码段较大时,上、下应当加入空白行,两个代码块之间只使用一个空行,禁止使用多行。

5->尽量不要在return返回语句中使用小括号。如return 1。

二、命名规则

1->类命名。首字符大写,即采用大驼峰命名法。如Sample、BigClassObject。

2->类属性命名。属性命名应该以字符‘m’为前缀。 前缀‘m’后采用于类命名一致的规则。 ‘m’总是在名字的开头起修饰作用,就像以‘r’开头表示引用一样。 前缀'm'防止类属性和方法名发生任何冲突。你的方法名和属性名经常会很类似,特别是存取元素。 如:mValue、mLongString等。

3->方法命名。采用大驼峰法。前缀最好是动词,如:Is,Get,Set等,用来说明该方法的功能。例如GetNum,IsValue...  方法中的参数命名:采用小驼峰命名法。

4->变量/函数命名。所有字母小写,用下划线_作为每个词的分界。如:$msg_error,$che_pwd等。即下划线命名法。

5->常量/全局常量命名。所有字母大写,用下划线_作为词的分界。

  如:$define('DEFAULT_NUM_AVE',90);

6->全局变量:加前缀“g”,静态变量:加前缀“s”,引用变量:加前缀“r”。

 

 

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