How to convert characters to uppercase letters in php?

How to convert php characters to uppercase letters: Use the built-in function strtoupper(); this function can convert a string to uppercase and then return a string converted to uppercase, the syntax is "strtoupper(string)".

php Convert characters to uppercase letters

Output:

H

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Description:

strtoupper() function converts a string to uppercase.

Syntax

strtoupper(string)

Parameters:

string is a required parameter, used to specify the string to be converted.

Return value: Returns the string converted to uppercase.

Example:

Output:

HELLO WORLD!

Related functions:

• ##strtolower() - Convert a string to lowercase

• lcfirst() - Convert the first character in the string to lowercase

• ucfirst() - Convert the first character in the string to lowercase Convert characters to uppercase

• ucwords() - Convert the first character of each word in the string to uppercase

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