How to convert numbers to uppercase letters in php

php method to convert numbers into uppercase letters: first create a new php file, and generate a random integer from 0 to 25 and assign it; then add the random integer to 65 to get a value, and return it through the chr function The uppercase letters corresponding to the ASCII value; finally output the obtained letters.

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php Convert numbers to uppercase letters Method:

#1. Create a php file named to.

#2. Generate a random integer from 0 to 25 and assign it a value.

#3. Add 65 to the random integer to get a value and then return the uppercase letter corresponding to the ASCII value through the chr function.

#4. Add 97 to a random integer to get a value and then return the lowercase letter corresponding to the ASCII value through the chr function.

#5. Output the randomly generated integers and the obtained uppercase and lowercase letters.

#6. You can also use strtolower to convert the uppercase letters obtained into lowercase letters.

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