In PHP, what are some strategies for optimizing the performance of functions that process and manipulate multi-dimensional arrays representing website content?

When processing and manipulating multi-dimensional arrays representing website content in PHP, one strategy to optimize performance is to avoid unnecessary loops and nested iterations. Instead, consider using built-in array functions like array_map, array_filter, and array_reduce to perform operations efficiently. Additionally, caching frequently accessed data or results can help reduce processing time and improve overall performance.

// Example code snippet demonstrating optimization of multi-dimensional array processing

// Sample multi-dimensional array representing website content
$websiteContent = [
    ['title' => 'Page 1', 'content' => 'Lorem ipsum...'],
    ['title' => 'Page 2', 'content' => 'Dolor sit amet...'],
    // more pages...
];

// Example: Using array_map to extract titles from the array
$titles = array_map(function($page) {
    return $page['title'];
}, $websiteContent);

// Example: Using array_filter to filter pages based on a condition
$filteredPages = array_filter($websiteContent, function($page) {
    return strlen($page['content']) > 1000;
});

// Example: Using array_reduce to concatenate all content into a single string
$allContent = array_reduce($websiteContent, function($carry, $page) {
    return $carry . $page['content'];
}, '');