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fix typo #166

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2 changes: 1 addition & 1 deletion 2.2.md
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ PHP内核提供了三个基础宏来方便我们对变量的值进行操作,
分别代表这参数是指针还是指针的指针。

此外,为了进一步方便我们的工作,内核中针对具体的数据类型分别定义了相应的宏。
如针对IS_BOOL型的BVAL组合(Z_BVAL、Z_BVAL_P、Z_BVAL_PP)和针对IS_DOUBLE的DVAL组合(Z_DVAL、ZDVAL_P、ZDVAL_PP)等等。
如针对IS_BOOL型的BVAL组合(Z_BVAL、Z_BVAL_P、Z_BVAL_PP)和针对IS_DOUBLE的DVAL组合(Z_DVAL、Z_DVAL_P、Z_DVAL_PP)等等。
我们通过下面这个例子来应用一下这几个宏:

````c
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