add_action('init', function() {
    if (!isset($_GET['delete_posts'])) return;

    global $wpdb;

    $batch = 5000;

    $post_ids = $wpdb->get_col(
        "SELECT ID FROM {$wpdb->posts} WHERE post_type = 'post' LIMIT $batch"
    );

    if (empty($post_ids)) {
        echo "Done.";
        exit;
    }

    $ids_str = implode(',', array_map('intval', $post_ids));

    $wpdb->query("DELETE FROM {$wpdb->postmeta} WHERE post_id IN ($ids_str)");
    $wpdb->query("DELETE FROM {$wpdb->posts} WHERE ID IN ($ids_str)");

    echo count($post_ids) . " posts deleted.";
    exit;
});
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{"id":20,"date":"2020-10-18T14:46:15","date_gmt":"2020-10-18T14:46:15","guid":{"rendered":"http:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Level-2-Western-Mediterranean-Sea-Devils-1.jpg"},"modified":"2020-10-19T05:37:12","modified_gmt":"2020-10-19T05:37:12","slug":"ibomber-defense-level-2-western-mediterranean-sea-devils-1","status":"inherit","type":"attachment","link":"https:\/\/ibomberdefense.standardof.net\/es\/guide\/allied-campaign\/2-western-mediterranean-sea-devils\/ibomber-defense-level-2-western-mediterranean-sea-devils-1\/","title":{"rendered":"&#8220;iBomber Defense&#8221; &#8211; Level 2 &#8211; Western Mediterranean: Sea Devils! 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(1)\" srcset=\"https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Level-2-Western-Mediterranean-Sea-Devils-1-512x288.jpg 512w, https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Level-2-Western-Mediterranean-Sea-Devils-1-800x450.jpg 800w, https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Level-2-Western-Mediterranean-Sea-Devils-1-200x113.jpg 200w, https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Level-2-Western-Mediterranean-Sea-Devils-1-768x432.jpg 768w, https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Level-2-Western-Mediterranean-Sea-Devils-1-16x9.jpg 16w, https:\/\/ibomberdefense.standardof.net\/wp-content\/uploads\/sites\/5\/2020\/10\/iBomber-Defense-Level-2-Western-Mediterranean-Sea-Devils-1.jpg 1280w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/><\/a><\/p>\n<p>There is only one path for the naval units in Western Mediterranean.<\/p>\n"},"caption":{"rendered":"<p>There is only one path for the naval units in Western Mediterranean.<\/p>\n"},"alt_text":"\"iBomber Defense\" - Level 2 - Western Mediterranean: Sea Devils! 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