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java软件工程师学php - 1. 动态数据类型

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Release: 2016-06-13 13:05:36
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java程序员学php -- 1. 动态数据类型
1. php里的数据类型是动态的,不要求在使用变量之前声明变量,如
   $var = 0;

2. php里变量的数据类型可在运行时变换,比如,你可以先后如下赋值:
   $var = 5;
   $var = 'abc';
   不会报错

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