What are the advantages of using regular expressions over explode for filtering file names in PHP?

Regular expressions offer more flexibility and power in pattern matching compared to using explode for filtering file names in PHP. With regular expressions, you can define complex patterns to match specific parts of the file names, allowing for more precise filtering. Additionally, regular expressions can handle a wider range of scenarios, making them more robust for handling different file name formats.

$files = ['file1.txt', 'file2.jpg', 'file3_backup.txt', 'file4.doc'];

$pattern = '/^file\d+\.(txt|jpg)$/'; // Match file names like file1.txt, file2.jpg
$filteredFiles = preg_grep($pattern, $files);

print_r($filteredFiles);