很多用户都希望在自己的wordpress网站前台增加投稿功能，虽然有很多插件可以实现此功能，但是能不用插件尽量不用插件，那么我们可以新建一个页面模板来实现投稿功能。
form表单的html代码我就不写了，这里主要写后台处理逻辑，代码如下：
$last_post = $wpdb->get_var(\"SELECT post_date FROM $wpdb->posts WHERE post_author=\'{$uid}\' AND post_type = \'post\' ORDER BY post_date DESC LIMIT 1\");
if ( time() - strtotime($last_post) < 120 ){
print_r(json_encode(array(\'error\'=>1, \'msg\'=>\'两次提交文章时间间隔太短，请稍候再来\')));
exit();
}
$title = $wpdb->escape($_POST[\'post_title\']);
$cat = $wpdb->escape($_POST[\'post_cat\']);
$excerpt = $wpdb->escape($_POST[\'post_excerpt\']);
$tag = $wpdb->escape($_POST[\'post_tag\']);
$content = $wpdb->escape($_POST[\'post_content\']);
if ( empty($title) || mb_strlen($title) > 50 ) {
print_r(json_encode(array(\'error\'=>1, \'msg\'=>\'标题不能为空，且小于50个字符\')));
exit();
}
if ( empty($content) || mb_strlen($content) > 10000 || mb_strlen($content) < 10 ) {
print_r(json_encode(array(\'error\'=>1, \'msg\'=>\'文章内容不能为空，且介于10-10000字之间\')));
exit();
}
$posttitle = $wpdb->get_var(\"SELECT post_title FROM $wpdb->posts WHERE post_author=\'{$uid}\' AND post_title = \'{$title}\' LIMIT 1\");
if( !empty($posttitle) ){
print_r(json_encode(array(\'error\'=>1, \'msg\'=>\'标题 \'. $posttitle .\' 已存在\')));
exit();
}
$in_data = array(
\'post_title\' => $title,
\'post_author\' => $uid,
\'post_excerpt\' => $excerpt,
\'post_content\' => $content,
\'tags_input\' => array($tag), //格式如：array(\"mobantu,mbt\")
\'post_status\' => \'pending\',
\'post_category\' => array($cat)
);
$in_id = wp_insert_post( $in_data );
if (!$in_id) {
print_r(json_encode(array(\'error\'=>1, \'msg\'=>\'投稿失败，请稍后再试\')));
exit();
}
wp_mail(get_bloginfo(\'admin_email\'), \'站长，有新投稿：\'.$title, $content);
print_r(json_encode(array(\'error\'=>0, \'msg\'=>\'投稿成功，我们将尽快审核\')));
以上代码是主题屋给客户增加的投稿代码，需要用到的同学可参考下。
