kostiantyn-petlia/delete.php

## delete.php
<?php
/**
 * !!! BE CAREFULLY !!!
 *
 * Will be deleted all files in the current dir!
 * Place this PHP-script file in the target folder & run like http://site.com/some-target-folder/delete.php
 *
 * Author: K
 * Version: 2.0
 *
 */
?>

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>Delete all files in the current dir</title>
</head>
<body style="padding: 2rem;">

<h1>Delete all files in the current dir</h1>
<h3>Note: the scrypt file must be placed in the target folder.</h3>

<?php
// Print here current target dir
$target_folder      = ( isset( $_GET['folder'] ) && ! empty( $_GET['folder'] ) ) ? $_GET['folder'] : null; // Delete all files & folders in this folder (name)
$exceptions         = [];
$exceptions_results = [];
if ( ! empty( $_GET['exceptions'] ) ) {
  $exceptions = explode( ',', trim( preg_replace( '/\s+/', '', $_GET['exceptions'] ) ) );
}
$current_file_name = basename( __FILE__ );
$current_dir       = dirname( __FILE__ ); // path/to/directory === Current File Dir
?>

<script>
  // Remove GET params form URL
  var clearURL = location.href.split("?")[0];
  window.history.replaceState({}, document.title, clearURL);
</script>

<p>You are here: <?php echo $current_dir; ?>\<strong><?php echo $current_file_name; ?></strong>
</p>

<hr>

<form action="" style="margin: 3rem 0;">
  <p>
    <label for="confirm"><strong>Specify the target folder name where is this script file:</strong></label><br>
    <input type="text" name="folder" value="" placeholder="this-folder-will-be-empty" required style="width: 100%;">
  </p>

  <p>
    <label for="exceptions"><strong>Don't delete files/folders with these path entries:</strong></label><br>
    <input type="text" name="exceptions" value="" placeholder="foo, bar.txt, /ignore-this/too" style="width: 100%;">
  </p>

  <p>
    <label for="confirm"><strong>Confirm the irreversible action!</strong></label><br>
    <input type="checkbox" name="confirm" value="confirmed">I understand that all files will be deleted<br>
  </p>

  <input type="submit" role="button">
</form>

<hr>

<?php if ( $target_folder === basename( $current_dir ) && isset( $_GET['confirm'] ) ) : // Delete only if the target_dir is the current_dir ?>
  <?php
  $di = new RecursiveDirectoryIterator( $current_dir, FilesystemIterator::SKIP_DOTS );
  $ri = new RecursiveIteratorIterator( $di, RecursiveIteratorIterator::CHILD_FIRST );
  foreach ( $ri as $file ) {
    // Check the target folder in the path to file (simple safety)
    // And don't delete this php-file. (Note: $file->getPath(); $file->getPathname(); $file->getFilename();)
    if ( strpos( $file->getPath(), $target_folder ) && $current_file_name != $file->getFilename() ) {
      // Check exceptions in the target folder (any entry in the filepath)
      $is_exception = false;
      foreach ( $exceptions as $exception ) {
        if ( false !== strpos( $file->getPathname(), $exception ) ) {
          $is_exception         = true;
          $exceptions_results[] = str_replace( $exception, '<strong style="color:red;">' . $exception . '</strong>', $file->getPathname() );
          break;
        }
      }
      // Delete dir or file
      if ( ! $is_exception ) {
        // Empty dir ('.' and '..')
        if ( $file->isDir() && count( scandir( $file->getPathname() ) ) == 2 ) {
          // delete the dir
          rmdir( $file );
        } else if ( ! $file->isDir() ) {
          // delete the file
          unlink( $file );
        }
      }
    }
  }
  ?>

  <h2>Result</h2>

  <p style="color:green;">
    <strong><?php echo 'Files in the target folder were deleted!'; ?></strong>
  </p>

  <h3>Exception entries:</h3>
  <ul>
    <?php foreach ( $exceptions_results as $item ) : ?>
      <li><?php echo $item; ?></li>
    <?php endforeach; ?>
  </ul>

  <h3>Current directory files:</h3>
  <ul>
    <?php $list = scandir( $current_dir ); ?>
    <?php foreach ( $list as $item ) : ?>
      <li><?php echo $item; ?></li>
    <?php endforeach; ?>
  </ul>

<?php else: ?>

  <p>
    <strong style="color:red;">Nothing was deleted in:</strong> <?php echo $current_dir; ?>
  </p>

<?php endif; ?>

</body>
</html>