我一直在努力从json数据导入帖子。问题是wp_insert_post() 正在添加帖子的多个版本。我之前是通过检查标题是否存在来检查帖子是否存在，但是有几个帖子需要导入，它们的标题相同，但内容不同。

function get_all_cpt_ids() {
    global $wpdb;
    $mids = $wpdb->get_results( "SELECT ID FROM tablename.subsite_4_posts WHERE post_type=\'thing\'", OBJECT );

foreach ( $mids as $key => $value ) {
    $thing_ids[] = $value->ID;
}

    return $thing_ids;
}

function mysite_import_json() {


$json_feed = \'http://local.mysite.com/wp-content/test.json\';
  $json      = file_get_contents( $json_feed );
  $objs      = json_decode( $json, true );
  $wp_error  = true;
  $id_arr    = [];

foreach ( $objs as $obj ) {
    $id_arr    = get_all_cpt_ids();
    $id        = $obj[\'nid\'];
    $title     = $obj[\'title\'];
    $meta1     = $obj[\'name\'];
    $d         = new DateTime();
    $d->setTimestamp( $obj[\'created\'] );
    $date_created = $d->format( \'Y-m-d H:i:s\' );
    $post_meta = array(
        \'meta_1\'        => $meta1,
    );

    $post_data = array(
        \'import_id\'   => $id,
        \'post_title\'  => $title,
        \'post_date\'   => $date_created,
        \'post_status\' => \'publish\',
        \'post_type\'   => \'thing\',
        \'meta_input\'  => $post_meta,
    );

    if ( ! in_array( $id_arr, $id, true ) ) {
        $post_id = wp_insert_post( $post_data, $wp_error );

        foreach ( $field_meta as $key => $value ) {
            update_post_meta( $post_id, $key, $value );
        }
    } 
  }
}

add_action( \'after_setup_theme\', \'mysite_import_json\' );

我还通过在函数运行后添加一个标志作为选项，将其设置为只运行一次，所以我真的不明白为什么wp_insert_post() 每运行一次以上$obj 在foreach 环