realpath_cache_get()

Introduction

In PHP, the realpath_cache_get() function retrieves information about the realpath cache. This article covers its syntax, return structure, and usage examples.

Understanding the realpath_cache_get() Function

The realpath_cache_get() function takes no parameters and returns an associative array containing cache entries. Each entry maps a resolved path to its metadata, such as the original path, expiration time, and whether it was found in the cache.

Syntax of the realpath_cache_get() Function

realpath_cache_get();

This function takes no parameters.

Examples of Using realpath_cache_get()

<?php

// Retrieve realpath cache entries
$cache_info = realpath_cache_get();
print_r($cache_info); // Outputs an associative array of cache metadata

This example retrieves the realpath cache information and outputs it to the browser. The output is an associative array where keys are resolved paths and values are arrays containing metadata like key, path, is_dir, realpath, expire, and found_in_cache.

The cache size is controlled by the realpath_cache_size PHP configuration directive. Checking the cache is useful for debugging file path resolution performance or verifying how many paths are cached before expiration.

Conclusion

The realpath_cache_get() function provides a straightforward way to inspect PHP's realpath cache. Understanding its output and configuration helps optimize file path resolution in your projects.

Practice