What is the purpose of using opendir(), readdir(), and closedir() functions in PHP?

The purpose of using opendir(), readdir(), and closedir() functions in PHP is to read the contents of a directory. opendir() opens a directory handle, readdir() reads the next entry in the directory, and closedir() closes the directory handle once all entries have been read. 

$directory = "path/to/directory";

if ($handle = opendir($directory)) {
    while (false !== ($entry = readdir($handle))) {
        echo "$entry\n";
    }
    closedir($handle);
}

Keywords

opendir readdir closedir file handling directory operations

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