get last word from string php

1substr("testers", -1); // returns "s"

1phpCopy<?php  
2$string = "This is a string";
3
4$lastChar = $string[-1];
5echo "The last char of the string is $lastChar.";
6?>
7

1function getLastWord($string)
2    {
3        $string = explode(' ', $string);
4        $last_word = array_pop($string);
5        return $last_word;
6    }

1phpCopy<?php  
2$string = 'This is a string';
3$lastChar = substr($string, -1);
4echo "The last char of the string is $lastChar.";
5?>
6