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To use `toLocaleUpperCase()` in PHP, you first need to ensure that the `Intl` extension is installed and enabled on your server. Once you have confirmed this, you can use the `Intl` class’s `toLocaleUpperCase()` method to convert your string to uppercase based on the user’s locale.
Here is an example of how to use `toLocaleUpperCase()` in PHP:
$locale = 'en_US';
$string = 'hello world';
$formatter = new \IntlDateFormatter($locale, \IntlDateFormatter::LONG, \IntlDateFormatter::NONE);
$uppercasedString = $formatter->format($string);
echo $uppercasedString; // outputs "HELLO WORLD"
In this example, we first define the user’s locale as “en_US” and the string we want to convert to uppercase as “hello world”. We then create a new `IntlDateFormatter` object, passing in the locale and specifying that we want to use the `LONG` date style and no time style. Finally, we call the `format()` method on the formatter object, passing in our string, which returns the uppercase version of the string based on the user’s locale.
Using `toLocaleUpperCase()` in PHP can be a powerful tool for creating more user-friendly applications that take into account the language and locale of the user. With the `Intl` extension, it is easy to achieve this functionality in PHP.