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strtoupper() Function in PHP 8.1 and 8.2 With Example

Support PHP Version: PHP 7.1, PHP 7.2, PHP 7.3, PHP 7.4, PHP 8.0, PHP 8.1, PHP 8.2, PHP 8.3 With Latest All Version Support.

Hello Friends Today, through this tutorial, I will tell you How to Use `strtoupper()` function using PHP, PHP 8, PHP 8.1, PHP 8.2 With Example. The `strtoupper()` function in PHP is used to convert a string to uppercase. It’s available in both PHP 8.1 and PHP 8.2. Here’s how you can use it with an example:

// Original string
$string = "hello, world!";
// Convert the string to uppercase
$uppercase_string = strtoupper($string);
// Output the uppercase string
echo $uppercase_string;

In this example, the `strtoupper()` function converts the original string `”hello, world!”` to uppercase. The resulting uppercase string is stored in the variable `$uppercase_string` and then echoed out.

The output will be:


This function is handy when you need to normalize strings for comparison or consistent output formatting where uppercase is required. It’s a simple and effective way to manipulate string case in PHP.