Arrays & Data

PHP Program to Merge and Deduplicate Arrays

Merge multiple associative or indexed arrays in PHP and remove duplicates efficiently using array_unique and array_values.

PHP Source Code

Editable code sample with line numbers

PHP

Expected Output

When this program is compiled and executed, the terminal outputs:

Array A: 10, 20, 30, 40, 50
Array B: 30, 40, 50, 60, 70
Merged & Unique: 10, 20, 30, 40, 50, 60, 70

How the Code Works

array_merge combines two arrays. array_unique removes identical values while preserving original keys. array_values re-indexes the array numerically from 0.

Time Complexity

O(N)

Space Complexity

O(N)

Key Takeaways & Best Practices

array_unique keeps the original keys; wrap with array_values to reset 0-based indices.
implode() converts an array into a delimited string.

Master PHP with ZenCompiler

Practice in our high-performance cloud container IDE with multi-file support, interactive terminal STDIN, real-time memory visualizer, and structured lessons.

Related PHP Examples

Math & Numbers

O(√N)

Python Program to Check Prime Number

A prime number is a positive integer greater than 1 that has no positive divisors other than 1 and itself. This example demonstrates an optimized approach checking factors up to √n.

Python Program for Fibonacci Series

The Fibonacci sequence is a series where each number is the sum of the two preceding ones, starting from 0 and 1. Here we implement iterative generation and generator streaming.