wp_update_post( array|object $postarr = array(), bool $wp_error = false )

用新的帖子数据更新帖子。
Update a post with new post data.

目录锚点：#说明#参数#源码#笔记

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说明（Description）

不必为草稿设置日期。您可以设置日期，它不会被覆盖。

参数（Parameters）

源码（Source）

/**
 * 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 );
}

笔记（Notes）

示例