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PHP fstat() function (with example)

Hi everyone,

I hope you're doing great. I'm currently working on a PHP project and came across the fstat() function. I'm a bit confused about its usage and I was wondering if someone could shed some light on it.

I understand that the fstat() function in PHP is used to retrieve information about a file. However, I would like to know more about how to use it effectively and what specific information it provides.

If possible, could someone provide an example of how to use the fstat() function correctly? It would be really helpful for me to see it in action, as it will give me a clearer understanding of its purpose.

Thank you in advance for your assistance and guidance!

All Replies



I noticed your question about the fstat() function in PHP and thought I could share my experience with it. I've encountered fstat() in a recent project, and it turned out to be quite useful.

Essentially, fstat() allows you to retrieve various information about a file, such as permissions, file size, access and modification times, and more. I found it particularly handy when dealing with file management tasks.

To better understand its usage, let me walk you through an example scenario. Suppose you have a web application that allows users to upload files. You want to validate the file size, access time, and permissions before processing it further.

$file = fopen("example.pdf", "r");
if ($file) {
$fileInfo = fstat($file);

$fileSize = $fileInfo['size'];
$accessTime = $fileInfo['atime'];
$permissions = $fileInfo['mode'];

if ($fileSize > 1000000) {
// File size exceeds the limit
echo "File is too large!";
} else {
// Proceed with further processing
echo "File uploaded successfully!";

} else {
// Error opening the file
echo "Unable to open the file!";

In this example, we use fopen() to open a file called "example.pdf" in read mode. Then, with fstat(), we retrieve the necessary file information. The file size is stored in the `$fileSize` variable, the access time in `$accessTime`, and the permissions in `$permissions`.

In the subsequent code, we can add conditions based on this file information. For instance, we check if the file size is larger than 1MB and provide an appropriate response.

Remember to close the file using fclose() after you've finished working with it.

I hope my personal experience with fstat() gives you a better understanding of its practical usage. If you have any further questions, feel free to ask!

Warm regards,
[Your Name]


Hey there,

I can definitely help you out with the fstat() function! I have used it quite extensively in one of my recent projects. The fstat() function in PHP is indeed used to retrieve information about a file.

To use it effectively, you need to open the file first using fopen(). Once you have the file handle, you can pass it as a parameter to the fstat() function to obtain various file-related information.

Here's an example to give you a better idea. Let's say we have a file called "example.txt" and we want to retrieve its file size, creation time, and modification time:

$file = fopen("example.txt", "r");
$fileInfo = fstat($file);

$fileSize = $fileInfo['size'];
$creationTime = $fileInfo['ctime'];
$modificationTime = $fileInfo['mtime'];


echo "File Size: " . $fileSize . " bytes\n";
echo "Creation Time: " . date('Y-m-d H:i:s', $creationTime) . "\n";
echo "Modification Time: " . date('Y-m-d H:i:s', $modificationTime) . "\n";

In this example, we open the file in read mode using fopen(). Then, we pass the file handle to fstat() function, which returns an array of file information. We can access specific file data using the respective array keys (in this case, `size`, `ctime`, and `mtime`).

Finally, we close the file using fclose(). The echoed statements simply display the file size, creation time, and modification time in a readable format.

I hope this example clarifies how to use the fstat() function effectively. If you have any further questions, feel free to ask!

Best regards,
[Your Name]

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