What potential issues can arise when using the scandir function in PHP, as shown in the code snippet?

Using the scandir function in PHP can potentially return hidden files and directories (those starting with a dot) along with the regular ones. To filter out these hidden entries, you can check each result against a regular expression pattern to exclude those starting with a dot. This ensures that only visible files and directories are processed. 

$dir = '/path/to/directory';
$files = array_diff(scandir($dir), array('..', '.'));
foreach ($files as $file) {
    if (!preg_match('/^\./', $file)) {
        // Process visible files and directories
        echo $file . "\n";
    }
}

Keywords

scandir PHP file system directory error handling

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