PHP Program to Detect Integer or Float with Explanation
PHP
Easy
PHP Data Types
27 views
1 min read
88 words
This problem helps you practice core PHP fundamentals in a practical way. It builds intuition around float, int, detect. Let’s break it down step by step so you can implement it confidently.
Problem Statement
A number is given as text. Print INT if it looks like an integer, otherwise FLOAT.
Input Format
One token s.
Output Format
INT or FLOAT.
Constraints
s length
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;
if(preg_match('/[\\.eE]/',$inputText)) echo 'FLOAT'; else echo 'INT';
?>
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
A number is given as text. Print INT if it looks like an integer, otherwise FLOAT.
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;
if(preg_match('/[\\.eE]/',$inputText)) echo 'FLOAT'; else echo 'INT';
?>
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