How to convert php characters to uppercase

In PHP, you can use the strtoupper function to convert characters to uppercase. The syntax of this function is "strtoupper(string)". Its parameter string represents the string that needs to be converted. The return value is the string converted to uppercase. .

In PHP, you can use the strtoupper function to convert characters to uppercase.

strtoupper() function converts a string to uppercase.

Note: This function is binary safe.

Related functions:

strtolower() - Convert the string to lowercase

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

ucfirst() - Converts the first character in the string to uppercase

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

Syntax

strtoupper(string)

Parameters

string required. Specifies the string to be converted.

Return value: Returns the string converted to uppercase.

Convert all characters to uppercase:

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

Running result:

HELLO WORLD!

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