PHP Program to Decimal to Hex with Explanation
PHP
Medium
PHP Data Types
21 views
1 min read
77 words
This problem helps you practice core PHP fundamentals in a practical way. It builds intuition around hex, decimal, convert. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Convert an integer to uppercase hexadecimal (no 0x prefix).
Input Format
One integer n.
Output Format
Hex string.
Constraints
0
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
<?php
$inputText=trim(stream_get_contents(STDIN));
if($inputText==='') exit;
$n=intval($inputText);
echo strtoupper(dechex($n));
?>
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Solution Guide
Problem
Convert an integer to uppercase hexadecimal (no 0x prefix).
Details
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Official Solution
<?php
$inputText=trim(stream_get_contents(STDIN));
if($inputText==='') exit;
$n=intval($inputText);
echo strtoupper(dechex($n));
?>
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