How to convert characters into numbers in php

How to convert php to numbers: 1. Add the target type enclosed in parentheses before the variable to be converted; 2. Use the conversion function of the specific type of intval, floatval or strval; 3. Use "settype ();" method to convert.

php converts characters into numbers

1. The first conversion method: Add the target type enclosed in parentheses before the variable to be converted, such as (int); (bool); (float); (string); (array); (object)

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

3. The third conversion method: settype();

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