5 声明_PHP

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2016-06-01 12:38:47936browse

推荐一行一个声明,因为这样以利于写注释。亦即,


int $level; // 缩进的程度
int $size; // 由制表符决定

要优于,

int $level, $size;

不要将不同类型变量的声明放在同一行,例如:


int $foo, $fooarray[]; //错误

注意:上面的例子中,在类型和标识符之间放了一个空格,另一种被允许的替代方式是使用制表符:


int $level; // 缩进的程度
int $size; // 由制表符决定
$currentEntry; // 通常选择制表符作为缩进的标准

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