使用php将数字转换为字母[关闭]

Question

I store the number 1 2 3 4 as the answer to multiple choice questions in MySQL database,

But I want to display them in a b c d on web page.

I'm using PHP, how can I transform the numbers to letters using PHP?

echo "
<h2>question</h2>
<p>".$row[0]."</p>
<h2>answer</h2>
<p>".$row[1]."</p>"; 

The row[1] is {1,2,3,4} now, I want it turn to {A,B,C,D}.

Can any one please have a look and tell me how to do it?

Answer 1

It is very easy:

<?php
$row = array(1, 2, 3, 4);

echo "
<h2>question</h2>
<p>".chr(64 + $row[0])."</p>
<h2>answer</h2>
<p>".chr(64 + $row[1])."</p>";

Test it: http://3v4l.org/uojsK