get the last character of a string in 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

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

1phpCopy<?php  
2$string = "This is a string";
3$lengthOfString = strlen($string);
4$lastCharPosition = $lengthOfString-1;
5$lastChar = $string[$lastCharPosition];
6echo "The last char of the string is $lastChar.";
7?>
8

1phpCopy<?php 
2$string = "This is a string";
3$lastCharPosition = strlen($string) - 1;  
4for ($x = $lastCharPosition; $x < strlen($string); $x++) {
5    $newString = $string[$x]; 
6} 
7echo "The last char of the string is $newString.";
8?> 
9

1phpCopysubstr($stringName, $startingPosition, $lengthOfSubstring);
2