Are there any alternative methods in PHP to count the frequency of a word within a string?

To count the frequency of a word within a string in PHP, one alternative method is to use the `substr_count()` function. This function takes two parameters - the string to search in and the word to count. It returns the number of times the word appears in the string. This can be a simpler and more efficient way to count word frequency compared to using regular expressions or looping through the string.

$string = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Lorem ipsum dolor sit amet.";
$word = "Lorem";

$wordFrequency = substr_count($string, $word);

echo "The word '$word' appears $wordFrequency times in the string.";