What potential pitfalls or challenges can arise when working with arrays in PHP, especially when dealing with a large number of items like 2500 images?

When working with a large number of items like 2500 images in an array in PHP, potential pitfalls can include memory limitations, slow performance, and increased processing time. To address these challenges, consider using pagination to limit the number of items loaded into memory at once, optimizing your code for efficiency, and utilizing caching mechanisms to reduce the load on the server. 

// Example of implementing pagination to limit the number of items loaded into memory at once
$itemsPerPage = 100;
$page = isset($_GET['page']) ? $_GET['page'] : 1;
$startIndex = ($page - 1) * $itemsPerPage;

$images = array_slice($allImages, $startIndex, $itemsPerPage);

Keywords

memory limit performance array functions optimization out of memory

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