In what scenarios would it be more appropriate to use preg_match_all instead of substr_count for word counting in PHP?

When counting words in a string, using preg_match_all would be more appropriate than substr_count in scenarios where you need to consider word boundaries, such as counting only whole words and excluding partial matches. preg_match_all allows for more flexibility in defining what constitutes a word, such as including or excluding certain characters or patterns.

$string = "The quick brown fox jumps over the lazy dog";
$wordCount = preg_match_all("/\b\w+\b/", $string, $matches);
echo $wordCount;