Stock Ticker Reset script

<?php
if ( ! empty( $_GET['delete_me'] ) && 'yes' === $_GET['delete_me'] ) {
    $file_to_delete = basename( __FILE__ );
    printf( 'Deleting Stock Ticker Reset script file <strong>%s</strong>... ', $file_to_delete );
    unlink( $file_to_delete );
    exit();
}
/**
 * Tells WordPress to load the WordPress theme and output it.
 *
 * @var bool
 */
define( 'WP_USE_THEMES', false );

/** Loads the WordPress Environment and Template */
require __DIR__ . '/wp-blog-header.php';

/** Start Stock Ticker Reset Magic */
global $wpdb;

$is_deletion_confirmed = ! empty( $_GET['confirm_reset'] ) && 'dabome' === $_GET['confirm_reset'] ? true : false;
$nl = '<br/><br/>';
?>
<h1>DANGEROUS ZONE</h1>
<p>Below you can see what will be cleaned up from your WordPress installation if you enable checkbox and click on <strong>CLEANUP</strong> button.</p>
<form action="" method="GET">
    <label for="confirm_reset"><input type="checkbox" name="confirm_reset" id="confirm_reset" value="dabome" <?php checked( $is_deletion_confirmed ); ?> /> I understand that real data cleanup will be done without possibility to undo this action! <string>BEFORE YOU CONTINUE make sure you backed up your database!</strong></label>
    <input type="submit" name="submit" value="RESET" />
</form>
<hr/>
<?php

printf(
    '<h2>Stock Ticker Reset Log (%s)</h2>',
    $is_deletion_confirmed ? 'Doing real cleanup' : 'Dry run without deletion'
);
echo '<pre>';

// --- TABLE
echo '<h3>Deleting stock table...</h3>';
$stock_ticker_table = $wpdb->prefix . 'stock_ticker_data';
$sql = "DROP TABLE IF EXISTS $stock_ticker_table";
printf( 'Executing SQL query <strong>%s</strong>' . $nl, $sql );
if ( $is_deletion_confirmed ) {
    $wpdb->query( $sql );
}

// --- OPTIONS
echo '<h3>Deleting settings options...</h3>';
$stock_ticker_option_keys = [
    'stockticker_version',
    'stockticker_db_ver',
    'st_symbols',
    'st_show',
    'st_quote_zero',
    'st_quote_minus',
    'st_quote_plus',
    'stock_ticker_defaults',
    'stockticker_defaults',
    'stockticker_av_latest',
    'stockticker_av_latest_timestamp',
    'stockticker_defaults',
];
foreach ( $stock_ticker_option_keys as $option_key ) {
    $option_value = get_option( $option_key );
    if ( $option_value ) {
        printf(
            'Deleting Stock Ticker option <strong>%1$s</strong> which has value: %2$s' . $nl,
            $option_key,
            print_r( $option_value, 1 )
        );
        if ( $is_deletion_confirmed ) {
            delete_option( $option_key );
        }
    } else {
        printf( 'Stock Ticker option <strong>%s</strong> does not exists. Skip deletion option.' . $nl, $option_key );
    }
}

// --- TRANSIENTS
echo '<h3>Deleting transients...</h3>';
$results = $wpdb->get_results(
    $wpdb->prepare( "SELECT option_name,option_value FROM $wpdb->options WHERE option_name REGEXP %s", '_transient_st_avdata_|_transient_timeout_st_avdata_|_transient_stockticker_av_|_transient_timeout_stockticker_av_' )
);
foreach ( $results as $transient ) {
    printf(
        'Deleting transient <strong>%1$s</strong> with value: %2$s' . $nl,
        $transient->option_name,
        print_r( $transient->option_value, 1 )
    );
    if ( $is_deletion_confirmed ) {
        delete_option( $transient->option_name );
    }
}

// --- FILES in wp-content/uploads
echo '<h3>Deleting custom files...</h3>';
$stock_ticker_file_names = [
    'stock-ticker-custom.css',
    'stock-ticker-refresh.js',
];
$upload_dir = wp_upload_dir();
foreach ( $stock_ticker_file_names as $file_name ) {
    $file_to_delete = $upload_dir['basedir'] . '/' . $file_name;
    if ( is_file( $file_to_delete ) ) {
        printf( 'Deleting custom Stock Ticker file <strong>%s</strong>' . $nl, $file_to_delete );
        if ( $is_deletion_confirmed ) {
            unlink( "$file_to_delete" );
        }
    } else {
        printf( 'Custom Stock Ticker file <strong>%s</strong> does not exists. Skip file deletion.' . $nl, $file_name );
    }
}

echo '<h3>DONE!</h3>';
echo '</pre>';

if ( $is_deletion_confirmed ) {
    ?>
<h1>Do not forget to DELETE CLEANUP SCRIPT!</h1>
<p>Once you finished Stock Ticker Reset, make sure you delete this script manually or <a href="?delete_me=yes">CLICK HERE</a></p>
    <?php
}