How can developers optimize the code provided in the forum thread to ensure accurate grouping and linking of PDF files based on their names in PHP?

The issue with the current code is that it does not accurately group and link PDF files based on their names. To optimize the code, developers can modify the logic to properly extract the file names and create appropriate links. This can be achieved by using regular expressions to match the desired pattern in the file names and then generating the corresponding links. 

// Get all PDF files in the directory
$files = glob('path/to/pdf/files/*.pdf');

// Group and link PDF files based on their names
$groupedFiles = [];
foreach ($files as $file) {
    preg_match('/(prefix)(\d+)(suffix)\.pdf/', basename($file), $matches);
    if ($matches) {
        $number = $matches[2];
        $groupedFiles[$number] = $file;
    }
}

// Output the grouped and linked PDF files
foreach ($groupedFiles as $number => $file) {
    echo "<a href='$file'>PDF $number</a><br>";
}

Keywords

PHP file handling regular expressions array functions PDF manipulation

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