6.1 简单的语句
每行至多包含一条语句,例如:
$argv++; // 正确的
$argc--; // 正确的
$argv++; $argc--; // 错误的
6.2 复合语句
复合语句是包含在大括号中的语句序列,形如"{ 语句 }"。例如下面各段。
- 被括其中的语句应该较之复合语句缩进一个层次
- 左大括号"{"应位于复合语句起始行的行尾;右大括号"}"应另起一行并与复合语句首行对齐。
- 大括号可以被用于所有语句,包括单个语句,只要这些语句是诸如if-else或for控制结构的一部分。这样便于添加语句而无需担心由于忘了加括号而引入bug。

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