PHP Program to Rectangle Area Function with Explanation
PHP
Easy
PHP Functions
42 views
1 min read
80 words
This problem helps you practice core PHP fundamentals in a practical way. It builds intuition around area, rectangle, one. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Write area(w,h) and print the rectangle area.
Input Format
One line: w h.
Output Format
One integer area.
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;
[$w,$h]=array_map('intval',preg_split('/\\s+/', $inputText));
function area($w,$h){ return $w*$h; }
echo area($w,$h);
?>
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
Write area(w,h) and print the rectangle area.
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;
[$w,$h]=array_map('intval',preg_split('/\\s+/', $inputText));
function area($w,$h){ return $w*$h; }
echo area($w,$h);
?>
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