$title = 'the quick brown fox jumps over the lazy dog'; $titleize = Yii::t('yii', Inflector::titleize($title)); echo $titleize; // The Quick Brown Fox Jumps Over The Lazy DogDescription of code: In this example, we define a string variable `$title` with a sentence that needs to be titleized. Then we use the `Inflector::titleize` method to capitalize the first letter of each word in the string. Finally, we echo the titleized string to the webpage. Package library: `Inflector` is a helper class in the Yii framework that provides various string manipulation methods. It is a part of the `yii\helpers` package library, which contains other useful classes and functions for web development in PHP.