Retrieving File Names from a Directory in PHP
In PHP, obtaining the file names within a directory is a common task. Various approaches exist for achieving this.
DirectoryIterator
The recommended method is DirectoryIterator, which offers an object-oriented interface to iterate over the directory's content.
<code class="php">foreach (new DirectoryIterator('.') as $file) {
if($file->isDot()) continue;
echo $file->getFilename() . '<br>';
}</code>
scandir
An alternative is scandir, which returns an array of file names.
<code class="php">$files = scandir('.');
foreach($files as $file) {
if($file == '.' || $file == '..') continue;
echo $file . '<br>';
}</code>
opendir and readdir
Using opendir and readdir is another option.
<code class="php">if ($handle = opendir('.')) {
while (false !== ($file = readdir($handle))) {
if($file == '.' || $file == '..') continue;
echo $file . '<br>';
}
closedir($handle);
}</code>
glob
Glob can be employed for more complex file matching.
<code class="php">foreach (glob("*") as $file) {
if($file == '.' || $file == '..') continue;
echo $file . '<br>';
}</code>
Glob allows patterns, such as using an asterisk to match any characters or specifying partial file names to filter results.
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