How to Merge Two or More Arrays in PHP – A Complete manual How to Merge Two or More Arrays in PHP Merging arrays is a frequent task for PHP developers, whether you’re combining configuration settings, aggregating payload from multiple sources, or building sophisticated data structures. This article walks you through every built‑in approach, modern syntax, and custom technique you need to merge two or more arrays safely and efficiently. Table of Contents Basic array_merge() usage Merging associative arrays Recursive merging with array_merge_recursive() The spread operator (…) – PHP 7.4+ Custom method for unique values Performance considerations Common pitfalls & how…
