How Can I Reliably Retrieve Directory Filenames in PHP?

Retrieving Directory Filenames Using PHP

When working with file systems in PHP, it's often necessary to obtain a list of file names within a directory. While the built-in readdir function can be used for this purpose, it has certain limitations.

Encountering the '1' Issue with readdir:

In some cases, using readdir can result in unexpected output. For instance, when attempting to retrieve file names in a directory, the code below may produce an array filled with '1's rather than the actual file names:

if (is_dir($log_directory)) {
    if ($handle = opendir($log_directory)) {
        while($file = readdir($handle) !== FALSE) {
            $results_array[] = $file;
        }
        closedir($handle);
    }
}

Solution: Employing glob for File Name Retrieval:

To overcome this issue and obtain the desired file names, it's recommended to use the glob function. glob takes a file path pattern as its argument and returns an array of file names that match that pattern.

By utilizing glob, you can easily retrieve file names within a directory using the following syntax:

foreach(glob($log_directory.'/*.*') as $file) {
    ...
}

In this example, $log_directory represents the directory path from which you want to retrieve file names. The *.* pattern matches all files with any extension in the specified directory.

By iterating through the array returned by glob, you can access the file names and perform further operations as necessary.

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