CODEWITHSUNDEEP
phpdirectory
Dwarf Vader
Dwarf Vader

Reputation: 429

PHP - Searching for a file in a directory and finding its extension

I have a directory - .../dir - that contains many files - john.txt, bob.txt, anne.pdf, tom.txt, etc...

I am given a file name, and need to retreive its extension. I have high confidence that for each filename (ie john, bob, etc), there is only one file - so there shouldn't be a case when there's both john.txt and john.pdf. But let's say in case that this happens, picking only the first file is ok. Let's say PDF since it's earlier alphabetically.

I only found scandir(), but it returns the whole directory. I could search the array it retrns, but I'm hoping, maybe there's something more efficient?

Upvotes: 0

Views: 48

Answers (2)

Claudio
Claudio

Reputation: 5183

You can try something like this:

$filename = 'ana';

$files = glob($filename . '.*');
if ($files && ($ext = pathinfo($files[0], PATHINFO_EXTENSION))) {
    echo $ext;
}

Upvotes: 1

Oleg Butuzov
Oleg Butuzov

Reputation: 5395

You should check pathinfo() function for getting an extension.

<?php
$path_parts = pathinfo('/www/htdocs/inc/lib.inc.php');

echo $path_parts['dirname'], "\n";
echo $path_parts['basename'], "\n";
echo $path_parts['extension'], "\n";
echo $path_parts['filename'], "\n"; // since PHP 5.2.0
?>

As for searching file, in particular, directory you can use a glob() function

$file = glob("../dir/jon.*");

Upvotes: 1

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