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sql - Add file extension to PHP variable

Hey everyone,

I hope you're all doing well. I'm currently working on a PHP project where I need to add a file extension to a PHP variable. However, I'm not quite sure how to accomplish this.

To give you a bit of context, I have a variable called `$filename` which stores the name of a file. Let's say the value of `$filename` is "my_file". What I want to do is append a file extension, let's say ".txt", to this variable so that it becomes "my_file.txt".

Can anyone guide me on how to achieve this? I'd really appreciate any help or suggestions you can provide. Thanks in advance!

All Replies


Hey there!

Appending a file extension to a PHP variable is quite simple. In your case, to add the ".txt" extension to `$filename`, you can use string concatenation using the dot (.) operator.

Here's an example code snippet that demonstrates how to achieve this:

$filename = "my_file";
$extension = ".txt";
$fileWithExtension = $filename . $extension;

echo $fileWithExtension;

When you run this code, the output will be "my_file.txt", which is what you're looking for. Feel free to replace `"my_file"` with your actual variable name, and change `".txt"` to the desired file extension.

Hope this helps! Let me know if you have any further questions.



Adding a file extension to a PHP variable is a breeze. In your scenario, all you need to do is utilize the concatenation operation to merge the `$filename` variable with the file extension, represented by `".txt"` in this case.

Here's a quick snippet that showcases how you could accomplish this:

$filename = "my_file";
$fileWithExtension = "{$filename}.txt";

echo $fileWithExtension;

Upon executing this code, you'll get the desired result of "my_file.txt" printed out. Just substitute `"my_file"` with your actual variable and alter `".txt"` to match the desired file extension.

Feel free to give it a shot and let me know if you encounter any obstacles or if there's anything else I can assist you with. Cheers!


Hey all,

Hope everyone's doing great! Adding a file extension to a PHP variable is a pretty straightforward task. In your case, to include the ".txt" extension with the `$filename`, you can employ the `sprintf()` function.

Here's an example of how you can achieve this:

$filename = "my_file";
$fileWithExtension = sprintf("%s.txt", $filename);

echo $fileWithExtension;

When you run this code snippet, you will obtain the desired outcome of "my_file.txt" being displayed. Simply replace `"my_file"` with your actual variable and adjust `".txt"` according to your desired extension.

If you have any more queries or need further assistance, feel free to let me know. I'll be glad to help out. Stay coding!

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