Summary of methods for converting php strings to numbers

Summary of the method of converting php string to number

1. The first conversion method: add parentheses before the variable to be converted Enclosed target types, such as (int); (bool); (float); (string); (array); (object)

2. The second type Conversion method: Use three specific types of conversion functions, intval(); floatval(); strval()

3. The third conversion method: settype();

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