How to extract the last 4 words from a string? - php

Question

I would like to extract the last 4 words from a string as a single chunk.
For example, if I have:
"Are You Looking For The Best Website Review"
I'd like to catch the last four words as:
"The Best Website Review"
I only have basic coding knowledge and have tried every variation I could find within this forum.
The closest I've come is by using the suggestion of Rick Kuipers (How to obtain the last word of a string) but this gives me the words as individual values.
$split = explode(" ", $str);
echo $split[count($split)-4];
echo $split[count($split)-3];
echo $split[count($split)-2];
echo $split[count($split)-1];
My coding knowledge is limited so any suggestions would be appreciated.

Answer 1

Simply use str_word_count along with the array_splice like as
$str = "Are You Looking For The Best Website Review";
$arr = str_word_count($str,1);
echo implode(' ',array_splice($arr,-4));
Edited
If your text contains Are-You-Looking-For-The-Best-Website-Review hiphen the you can use str_replace like as
$arr = str_word_count(str_replace('-',' ',$str),1);
echo implode(' ',array_splice($arr,-4));
Demo

Answer 2

You can use a simple regular expression for this:
<?php
$subject = "Are You Looking For The Best Website Review";
$pattern = '/(\w+\s+\w+\s+\w+\s+\w+)\s*$/u';
preg_match($pattern, $subject, $tokens);
var_dump($tokens[0]);
The output is:
string(23) "The Best Website Review"
This also has the advantage that the type and number of whitespaces between words is irrelevant and trailing whitespaces at the end of the string are ignored.
Edit: considering your comment to the answer posted by #Uchiha this is a variant of the pattern that shows how you can easily match words delimited by other characters apart from whitespaces:
$pattern = '/(\w+[-\s]+\w+[-\s]+\w+[-\s]+\w+)\s*$/u';