PHP Program to Longest Word with Explanation
PHP
Medium
PHP Strings
37 views
1 min read
85 words
This problem helps you practice core PHP fundamentals in a practical way. It builds intuition around word, longest, line. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Print the longest word in the line (if tie, print the first).
Input Format
One line string s.
Output Format
One word.
Constraints
Total chars
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
<?php
$inputText=rtrim(stream_get_contents(STDIN));
if($inputText==='') exit;
$words=preg_split('/\\s+/', trim($inputText));
$best='';
foreach($words as $w){
if(strlen($w)>strlen($best)) $best=$w;
}
echo $best;
?>
Output Example
Input:
I love programming a lot
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
Print the longest word in the line (if tie, print the first).
Examples
Input:
I love programming a lot
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
$inputText=rtrim(stream_get_contents(STDIN));
if($inputText==='') exit;
$words=preg_split('/\\s+/', trim($inputText));
$best='';
foreach($words as $w){
if(strlen($w)>strlen($best)) $best=$w;
}
echo $best;
?>
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