How to convert data types in PHP

The method of data type conversion in PHP: first add the target type enclosed in parentheses before the variable to be converted; then use three specific types of conversion functions [intval(), floatval(), strval ()]; Finally, you can use the general type conversion function [settype(mixed var)].

Data type conversion method in PHP:

1. Add parentheses before the variable to be converted Enclosed target type

2. Use three specific type conversion functions, intval(), floatval(), strval()

3. Use the general type conversion function settype(mixed var ,string type)

The first conversion method: (int) (bool) (float) (string) (array) (object)

The code is as follows:

The second conversion method: intval() floatval() strval()

The code is as follows:

   第三种转换方式：  settype();

The code is as follows:

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