How Can I Recursively Find Files and Folders in PHP Without Performance Issues?

Finding Files and Folders Recursively with PHP

To traverse a directory's contents and all subdirectories, a recursive function is employed. However, the code provided has a performance issue, causing the browser to slow down significantly.

The Issue

The function doesn't exclude "." and ".." directories from the recursive calls, leading to an infinite loop and slow execution.

The Fix

To address this issue, we modified the code as follows:

function getDirContents($dir, &$results = array()) {
    $files = scandir($dir);

    foreach ($files as $key => $value) {
        $path = realpath($dir . DIRECTORY_SEPARATOR . $value);
        if (!is_dir($path)) {
            $results[] = $path;
        } else if ($value != "." && $value != "..") {
            getDirContents($path, $results);
            $results[] = $path;
        }
    }

    return $results;
}

Exclusion of "." and ".."

We added conditions to exclude "." and ".." directories from the recursive calls. These directories represent the current and parent directories, respectively, and their inclusion would create an infinite loop.

Usage

To use the function, simply provide the path to the directory you want to traverse:

var_dump(getDirContents('/xampp/htdocs/WORK'));

This code will return an array containing the complete list of files and folders within the specified directory. Each entry will be the full path to the file or folder.

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