How PHP intercepts strings by word

This specifies the string and the number of words to intercept.

The code is as follows: <?php
function Limit_words ($string, $word _limit)
{
$words = Explode ("", $string);
Return implode ("", Array_splice ($words, 0, $word _limit));
}
Example Usage
$content = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore Magna Aliqua. UT enim ad minim veniam, quis nostrud exercitation, Ullamco laboris ut nisi ex ea aliquip commodo. Duis aute irure dolor in Reprehenderit, voluptate velit esse cillum dolore eu fugiat nulla. Excepteur Sint Occaecat Cupidatat non proident, sunt in culpa qui, officia deserunt mollit anim id est laborum. ";
Echo Limit_words ($content, 20);
?>