Remove unreal images from wp

clean_wp.php

<?php
$imgs = get_posts("post_type=attachment&numberposts=-1");
$x=0;
foreach($imgs as $img){
    $file = get_attached_file($img->ID);
    $Image_size = getimagesize($file);

    if(!is_array($Image_size)){
        wp_delete_post( $img->ID, false );
        echo $x .'- Deleting attachment #'.$img->ID;
    }else{
        echo $x .'- OK! attachment #'.$img->ID;
    }
    echo '<br />';
    $x++;
}