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PHP realpath_cache_get() function (with example)

Hey everyone,
I have been trying to understand the PHP function realpath_cache_get(), but I'm still a bit confused. I was wondering if anyone could provide me with a clear explanation and maybe even an example of how to use this function correctly.

To give you some context, I'm currently working on a project where I need to retrieve the realpath cache entries and analyze them. I've read the PHP documentation, but it's still not entirely clear to me how to utilize this function effectively.

If anyone has experience using realpath_cache_get() or insight into how it works, I would greatly appreciate it if you could share your knowledge and perhaps provide some examples too. Thank you in advance for your help!

All Replies


Hey folks,

I've had some experience using the realpath_cache_get() function and thought I'd offer my insights. This function is quite handy when you're working with file paths in PHP and want to leverage the realpath cache for more efficient operations.

Let me share a practical example to give you a better understanding. Suppose you're developing a web application that deals with uploading files and you want to store their real paths in a database. Instead of repeatedly resolving the paths with realpath() function, you can take advantage of the realpath cache.

Here's a snippet of how you could approach it:

// Enable and configure the realpath cache
realpath_cache_size(1000); // Set the cache size to accommodate your needs
realpath_cache_ttl(600); // Set the time-to-live for cache entries as per your requirements

// Assuming you received an uploaded file from a form
$uploadedFile = $_FILES['file'];

// Store the real path
$realpath = realpath($uploadedFile['tmp_name']);
if ($realpath) {
$fileInfo = [
'originalName' => $uploadedFile['name'],
'realpath' => $realpath,
// ... other relevant file details

// Store the $fileInfo in your database
// ...

// Retrieve the realpath cache entries
$cacheEntries = realpath_cache_get();

// Do something with the cache entries
// ...

In this scenario, we enable and customize the realpath cache size and time-to-live using realpath_cache_size() and realpath_cache_ttl() functions. Adjust these settings according to the number of files you anticipate processing and the desired cache expiration time.

After receiving an uploaded file, we obtain its realpath using the realpath() function and save it along with its original name and other relevant details in the database. This eliminates the need to resolve the realpath repeatedly, improving performance.

Lastly, you can retrieve the cache entries using realpath_cache_get() for further analysis or manipulation. For instance, you could iterate over the cache entries and perform additional operations on the stored paths.

I hope this provides you with a helpful example and clarifies how you can apply realpath_cache_get() in real-world scenarios. If you have any further inquiries, feel free to ask!


Hey there,

I've used the realpath_cache_get() function before, so I can definitely help you out. This function is used to retrieve the entries from the realpath cache, which is a cache of resolved paths to ensure efficient file operations.

To illustrate how you can use realpath_cache_get(), let's say you have a PHP script where you're working with multiple files and you want to retrieve the realpath cache entries for those files. You can do something like this:

// Enable the realpath cache
realpath_cache_size(10000); // Set the size of the cache, adjust as needed
realpath_cache_ttl(300); // Set the time-to-live for cached entries, adjust as needed

// Perform operations with your files

// Retrieve the realpath cache entries
$cacheEntries = realpath_cache_get();

// Loop through the cache entries and output them
foreach ($cacheEntries as $path => $realpath) {
echo "Path: " . $path . ", Realpath: " . $realpath . PHP_EOL;

In this example, we first set the size and time-to-live for the realpath cache using realpath_cache_size() and realpath_cache_ttl(). Adjust the values based on your specific needs.

Then, you can perform your file operations as usual. Once you're ready, you can call the realpath_cache_get() function to retrieve the cache entries. This will give you an array where the keys represent the original paths and the values are the corresponding realpaths.

You can then loop through the cache entries and output them or use them for further analysis or manipulation.

I hope this example clarifies how to use realpath_cache_get(). Let me know if you have any further questions!

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