How Can I Retrieve Filenames from a Directory in PHP?

Obtaining Filenames from a Directory Using PHP

Many PHP developers seek a reliable method to retrieve the file names within a directory. This comprehensive guide explores multiple approaches for achieving this task.

DirectoryIterator: The Preferred Choice

PHP's DirectoryIterator class offers an optimized solution:

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

Scandir: An Alternative Route

Scandir provides a simpler option:

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

Opendir and Readdir: Legacy Option

For legacy code compatibility:

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

Glob: Powerful Pattern Matching

Glob offers a versatile approach with pattern matching:

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

Note that using "" in glob allows for customizable patterns (e.g., "glob('.txt')" retrieves text files).

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