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<?php

add_action('wpcf7_upgrade', 'wpcf7_convert_to_cpt', 10, 2);
function wpcf7_convert_to_cpt($new_ver, $old_ver)
{
    global $wpdb;
    if (!version_compare($old_ver, '3.0-dev', '<')) {
        return;
    }
    $old_rows = array();
    $table_name = $wpdb->prefix . "contact_form_7";
    if ($wpdb->get_var("SHOW TABLES LIKE '{$table_name}'")) {
        $old_rows = $wpdb->get_results("SELECT * FROM {$table_name}");
    } elseif ($opt = get_option('wpcf7') and !empty($opt['contact_forms'])) {
        foreach ((array) $opt['contact_forms'] as $key => $value) {
            $old_rows[] = (object) array_merge($value, array('cf7_unit_id' => $key));
        }
    }
    foreach ((array) $old_rows as $row) {
        $q = "SELECT post_id FROM {$wpdb->postmeta} WHERE meta_key = '_old_cf7_unit_id'" . $wpdb->prepare(" AND meta_value = %d", $row->cf7_unit_id);
        if ($wpdb->get_var($q)) {
            continue;
        }
        $postarr = array('post_type' => 'wpcf7_contact_form', 'post_status' => 'publish', 'post_title' => maybe_unserialize($row->title));
        $post_id = wp_insert_post($postarr);
        if ($post_id) {
            update_post_meta($post_id, '_old_cf7_unit_id', $row->cf7_unit_id);
            $metas = array('form', 'mail', 'mail_2', 'messages', 'additional_settings');
            foreach ($metas as $meta) {
                update_post_meta($post_id, '_' . $meta, wpcf7_normalize_newline_deep(maybe_unserialize($row->{$meta})));
            }
        }
    }
}
add_action('wpcf7_upgrade', 'wpcf7_prepend_underscore', 10, 2);
function wpcf7_prepend_underscore($new_ver, $old_ver)
{
    if (version_compare($old_ver, '3.0-dev', '<')) {
        return;
    }
    if (!version_compare($old_ver, '3.3-dev', '<')) {
        return;
    }
    $posts = WPCF7_ContactForm::find(array('post_status' => 'any', 'posts_per_page' => -1));
    foreach ($posts as $post) {
        $props = $post->get_properties();
        foreach ($props as $prop => $value) {
            if (metadata_exists('post', $post->id(), '_' . $prop)) {
                continue;
            }
            update_post_meta($post->id(), '_' . $prop, $value);
            delete_post_meta($post->id(), $prop);
        }
    }
}