How can regular expressions be utilized in PHP to handle complex text formatting requirements, such as title case conversion?

Regular expressions can be utilized in PHP to handle complex text formatting requirements, such as converting text to title case. This can be achieved by using regular expressions to identify word boundaries and capitalize the first letter of each word. By using regular expressions in PHP, you can easily implement title case conversion for strings. 

$text = "this is a sample text to convert to title case";
$titleCaseText = preg_replace_callback('/\b\w/', function($match) {
    return strtoupper($match[0]);
}, $text);

echo $titleCaseText;

Keywords

regular expressions PHP text formatting title case conversion complex

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