Practice Real Company Assessment Patterns • Latest 2025–2026 Mock Tests

Programming Exercises

Write a PHP script to find the longest common prefix of an array of strings.

Medium

Problem Statement

Write a PHP script to find the longest common prefix of an array of strings.

Sample Input

['flower', 'flow', 'flight']

Sample Output

fl

Limits

Time: 2s · Memory: 256 MB

Code Editor
00:00
<?php function longestCommonPrefix($arr) { // Your code here } ?>
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Input
['flower', 'flow', 'flight']
Expected Output
fl