描述:
通过代码更新文章的内容和信息
用法:
<?php wp_update_post( $post, $wp_error ); ?>
参数:
$post
(array/object) (可选) 表示构成post的元素的数组或对象。这些元素与数据库中wp_posts表中列的名称之间存在一对一关系。填写ID字段并不是绝对必要的,但是如果没有它,使用函数就没什么意义了。
默认值: 空
$wp_error
(Boolean) (可选) 一个布尔值,可以通过它来控制失败时返回的内容。如果post更新失败,默认设置(false)将返回0。但是,如果设置为true,则返回WP_Error对象。
默认值: false
源文件:
/**
* Update a post with new post data.
*
* The date does not have to be set for drafts. You can set the date and it will
* not be overridden.
*
* @since 1.0.0
*
* @param array|object $postarr Optional. Post data. Arrays are expected to be escaped,
* objects are not. Default array.
* @param bool $wp_error Optional. Allow return of WP_Error on failure. Default false.
* @return int|WP_Error The value 0 or WP_Error on failure. The post ID on success.
*/
function wp_update_post( $postarr = array(), $wp_error = false ) {
if ( is_object($postarr) ) {
// Non-escaped post was passed.
$postarr = get_object_vars($postarr);
$postarr = wp_slash($postarr);
}
// First, get all of the original fields.
$post = get_post($postarr['ID'], ARRAY_A);
if ( is_null( $post ) ) {
if ( $wp_error )
return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
return 0;
}
// Escape data pulled from DB.
$post = wp_slash($post);
// Passed post category list overwrites existing category list if not empty.
if ( isset($postarr['post_category']) && is_array($postarr['post_category'])
&& 0 != count($postarr['post_category']) )
$post_cats = $postarr['post_category'];
else
$post_cats = $post['post_category'];
// Drafts shouldn't be assigned a date unless explicitly done so by the user.
if ( isset( $post['post_status'] ) && in_array($post['post_status'], array('draft', 'pending', 'auto-draft')) && empty($postarr['edit_date']) &&
('0000-00-00 00:00:00' == $post['post_date_gmt']) )
$clear_date = true;
else
$clear_date = false;
// Merge old and new fields with new fields overwriting old ones.
$postarr = array_merge($post, $postarr);
$postarr['post_category'] = $post_cats;
if ( $clear_date ) {
$postarr['post_date'] = current_time('mysql');
$postarr['post_date_gmt'] = '';
}
if ($postarr['post_type'] == 'attachment')
return wp_insert_attachment($postarr);
return wp_insert_post( $postarr, $wp_error );
}