How to Retrieve Filenames from a Directory in PHP?

Retrieve Files from a Directory in PHP

How can I access the filenames within a directory in PHP? Identifying the proper command has proven challenging. This question aims to provide assistance to individuals seeking similar solutions.

PHP offers several methods for obtaining file listings from a directory:

DirectoryIterator (Recommended)

This class allows for the iteration over files in a directory:

<code class="php">foreach (new DirectoryIterator('.') as $file) {
    if($file->isDot()) continue;
    print $file->getFilename() . '<br>';
}</code>

scandir

This function retrieves an array of files and directories in a directory:

<code class="php">$files = scandir('.');
foreach($files as $file) {
    if($file == '.' || $file == '..') continue;
    print $file . '<br>';
}</code>

readdir and opendir

This combination of functions provides access to a directory handle:

<code class="php">if ($handle = opendir('.')) {
    while (false !== ($file = readdir($handle))) {
        if($file == '.' || $file == '..') continue;
        print $file . '<br>';
    }
    closedir($handle);
}</code>

glob

This function is useful for matching files based on patterns:

<code class="php">foreach (glob("*") as $file) {
    if($file == '.' || $file == '..') continue;
    print $file . '<br>';
}</code>

Additional Notes

glob allows for more complex file matching using patterns, such as ''.txt' for text files or 'image_' for files starting with the prefix 'image_'.

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