How to convert English lowercase to uppercase in php

How to convert English lowercase to uppercase in php: You can use the php built-in function strtoupper() function to achieve this. This function can convert all lowercase characters in the specified string to uppercase and return the string converted to uppercase, such as: [strtoupper("Hello WORLD!")].

strtoupper() function converts a string to uppercase and returns the string converted to uppercase.

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Syntax:

strtoupper(string)

Parameters:

string Required. Specifies the string to be converted.

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Code example:

<?php
echo strtoupper("Hello WORLD!");
?>

Output result:

HELLO WORLD!

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