描述：
使用代码创建一篇文章
用法：
<?php wp_insert_post( $post, $wp_error ); ?> 参数：
$post
(array) (必填) 一个数组，表示构成post的元素。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。
默认值: None
$post = array(
'ID' => [ <post id> ] // 如果需要更新已经存在的文章，需要填写文章ID，创建新文章不需要填写
'post_content' => [ <string> ] // 文章内容.
'post_name' => [ <string> ] // 文章别名
'post_title' => [ <string> ] // 文章标题.
'post_status' => [ 'draft' | 'publish' | 'pending'| 'future' | 'private' | custom registered status ] // 文章状态.
'post_type' => [ 'post' | 'page' | 'link' | 'nav_menu_item' | custom post type ] // 要给那个文章类型下发布文章.
'post_author' => [ <user ID> ] // The user ID number of the author. Default is the current user ID.
'ping_status' => [ 'closed' | 'open' ] // 允许ping？.
'post_parent' => [ <post ID> ] //设置新文章的父级（如果有）。默认0.
'menu_order' => [ <order> ] // 如果新文章是一个页面，请设置它在支持的菜单中的显示顺序。默认值0。
'to_ping' => // 空格或回车将URL的分隔列表返回到ping。默认空字符串。
'pinged' => // 空格或回车返回已ping的url的分隔列表。默认空字符串。
'post_password' => [ <string> ] // 如果是私密文章的话需要设定的文章密码.
'guid' => // 跳过这个，通常让Wordpress处理。
'post_content_filtered' => // 跳过这个，通常让Wordpress处理。
'post_excerpt' => [ <string> ] // 文章摘要
'post_date' => [ Y-m-d H:i:s ] // 文章发布日期
'post_date_gmt' => [ Y-m-d H:i:s ] // 时间是格林尼治时间。
'comment_status' => [ 'closed' | 'open' ] // 是否开启文章评论
'post_category' => [ array(<category id>, ...) ] // 文章分类
'tags_input' => [ '<tag>, <tag>, ...' | array ] // 文章标签
'tax_input' => [ array( <taxonomy> => <array | string>, <taxonomy_other> => <array | string> ) ] // 自定义文章分类，如果是发布在自定义文章类型下的话填此项
'page_template' => [ <string> ] // 文章页面模板
); $wp_error
(bool) (可选) 允许在失败时返回WP_Error对象
默认值: false
源文件：
/**
* Insert or update a post.
*
* If the $postarr parameter has 'ID' set to a value, then post will be updated.
*
* You can set the post date manually, by setting the values for 'post_date'
* and 'post_date_gmt' keys. You can close the comments or open the comments by
* setting the value for 'comment_status' key.
*
* @since 1.0.0
* @since 4.2.0 Support was added for encoding emoji in the post title, content, and excerpt.
*
* @see sanitize_post()
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $postarr {
* An array of elements that make up a post to update or insert.
*
* @type int $ID The post ID. If equal to something other than 0,
* the post with that ID will be updated. Default 0.
* @type int $post_author The ID of the user who added the post. Default is
* the current user ID.
* @type string $post_date The date of the post. Default is the current time.
* @type string $post_date_gmt The date of the post in the GMT timezone. Default is
* the value of `$post_date`.
* @type mixed $post_content The post content. Default empty.
* @type string $post_content_filtered The filtered post content. Default empty.
* @type string $post_title The post title. Default empty.
* @type string $post_excerpt The post excerpt. Default empty.
* @type string $post_status The post status. Default 'draft'.
* @type string $post_type The post type. Default 'post'.
* @type string $comment_status Whether the post can accept comments. Accepts 'open' or 'closed'.
* Default is the value of 'default_comment_status' option.
* @type string $ping_status Whether the post can accept pings. Accepts 'open' or 'closed'.
* Default is the value of 'default_ping_status' option.
* @type string $post_password The password to access the post. Default empty.
* @type string $post_name The post name. Default is the sanitized post title.
* @type string $to_ping Space or carriage return-separated list of URLs to ping.
* Default empty.
* @type string $pinged Space or carriage return-separated list of URLs that have
* been pinged. Default empty.
* @type string $post_modified The date when the post was last modified. Default is
* the current time.
* @type string $post_modified_gmt The date when the post was last modified in the GMT
* timezone. Default is the current time.
* @type int $post_parent Set this for the post it belongs to, if any. Default 0.
* @type int $menu_order The order the post should be displayed in. Default 0.
* @type string $post_mime_type The mime type of the post. Default empty.
* @type string $guid Global Unique ID for referencing the post. Default empty.
* }
* @param bool $wp_error Optional. Whether to allow return of WP_Error on failure. Default false.
* @return int|WP_Error The post ID on success. The value 0 or WP_Error on failure.
*/
function wp_insert_post( $postarr, $wp_error = false ) {
global $wpdb;
$user_id = get_current_user_id();
$defaults = array(
'post_author' => $user_id,
'post_content' => '',
'post_content_filtered' => '',
'post_title' => '',
'post_excerpt' => '',
'post_status' => 'draft',
'post_type' => 'post',
'comment_status' => '',
'ping_status' => '',
'post_password' => '',
'to_ping' => '',
'pinged' => '',
'post_parent' => 0,
'menu_order' => 0,
'guid' => '',
'import_id' => 0,
'context' => '',
);
$postarr = wp_parse_args($postarr, $defaults);
unset( $postarr[ 'filter' ] );
$postarr = sanitize_post($postarr, 'db');
// Are we updating or creating?
$post_ID = 0;
$update = false;
$guid = $postarr['guid'];
if ( ! empty( $postarr['ID'] ) ) {
$update = true;
// Get the post ID and GUID.
$post_ID = $postarr['ID'];
$post_before = get_post( $post_ID );
if ( is_null( $post_before ) ) {
if ( $wp_error ) {
return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
}
return 0;
}
$guid = get_post_field( 'guid', $post_ID );
$previous_status = get_post_field('post_status', $post_ID );
} else {
$previous_status = 'new';
}
$post_type = empty( $postarr['post_type'] ) ? 'post' : $postarr['post_type'];
$post_title = $postarr['post_title'];
$post_content = $postarr['post_content'];
$post_excerpt = $postarr['post_excerpt'];
if ( isset( $postarr['post_name'] ) ) {
$post_name = $postarr['post_name'];
}
$maybe_empty = 'attachment' !== $post_type
&& ! $post_content && ! $post_title && ! $post_excerpt
&& post_type_supports( $post_type, 'editor' )
&& post_type_supports( $post_type, 'title' )
&& post_type_supports( $post_type, 'excerpt' );
/**
* Filter whether the post should be considered "empty".
*
* The post is considered "empty" if both:
* 1. The post type supports the title, editor, and excerpt fields
* 2. The title, editor, and excerpt fields are all empty
*
* Returning a truthy value to the filter will effectively short-circuit
* the new post being inserted, returning 0. If $wp_error is true, a WP_Error
* will be returned instead.
*
* @since 3.3.0
*
* @param bool $maybe_empty Whether the post should be considered "empty".
* @param array $postarr Array of post data.
*/
if ( apply_filters( 'wp_insert_post_empty_content', $maybe_empty, $postarr ) ) {
if ( $wp_error ) {
return new WP_Error( 'empty_content', __( 'Content, title, and excerpt are empty.' ) );
} else {
return 0;
}
}
$post_status = empty( $postarr['post_status'] ) ? 'draft' : $postarr['post_status'];
if ( 'attachment' === $post_type && ! in_array( $post_status, array( 'inherit', 'private', 'trash' ) ) ) {
$post_status = 'inherit';
}
if ( ! empty( $postarr['post_category'] ) ) {
// Filter out empty terms.
$post_category = array_filter( $postarr['post_category'] );
}
// Make sure we set a valid category.
if ( empty( $post_category ) || 0 == count( $post_category ) || ! is_array( $post_category ) ) {
// 'post' requires at least one category.
if ( 'post' == $post_type && 'auto-draft' != $post_status ) {
$post_category = array( get_option('default_category') );
} else {
$post_category = array();
}
}
// Don't allow contributors to set the post slug for pending review posts.
if ( 'pending' == $post_status && !current_user_can( 'publish_posts' ) ) {
$post_name = '';
}
/*
* Create a valid post name. Drafts and pending posts are allowed to have
* an empty post name.
*/
if ( empty($post_name) ) {
if ( !in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) ) {
$post_name = sanitize_title($post_title);
} else {
$post_name = '';
}
} else {
// On updates, we need to check to see if it's using the old, fixed sanitization context.
$check_name = sanitize_title( $post_name, '', 'old-save' );
if ( $update && strtolower( urlencode( $post_name ) ) == $check_name && get_post_field( 'post_name', $post_ID ) == $check_name ) {
$post_name = $check_name;
} else { // new post, or slug has changed.
$post_name = sanitize_title($post_name);
}
}
/*
* If the post date is empty (due to having been new or a draft) and status
* is not 'draft' or 'pending', set date to now.
*/
if ( empty( $postarr['post_date'] ) || '0000-00-00 00:00:00' == $postarr['post_date'] ) {
$post_date = current_time( 'mysql' );
} else {
$post_date = $postarr['post_date'];
}
// Validate the date.
$mm = substr( $post_date, 5, 2 );
$jj = substr( $post_date, 8, 2 );
$aa = substr( $post_date, 0, 4 );
$valid_date = wp_checkdate( $mm, $jj, $aa, $post_date );
if ( ! $valid_date ) {
if ( $wp_error ) {
return new WP_Error( 'invalid_date', __( 'Whoops, the provided date is invalid.' ) );
} else {
return 0;
}
}
if ( empty( $postarr['post_date_gmt'] ) || '0000-00-00 00:00:00' == $postarr['post_date_gmt'] ) {
if ( ! in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) ) {
$post_date_gmt = get_gmt_from_date( $post_date );
} else {
$post_date_gmt = '0000-00-00 00:00:00';
}
} else {
$post_date_gmt = $postarr['post_date_gmt'];
}
if ( $update || '0000-00-00 00:00:00' == $post_date ) {
$post_modified = current_time( 'mysql' );
$post_modified_gmt = current_time( 'mysql', 1 );
} else {
$post_modified = $post_date;
$post_modified_gmt = $post_date_gmt;
}
if ( 'attachment' !== $post_type ) {
if ( 'publish' == $post_status ) {
$now = gmdate('Y-m-d H:i:59');
if ( mysql2date('U', $post_date_gmt, false) > mysql2date('U', $now, false) ) {
$post_status = 'future';
}
} elseif ( 'future' == $post_status ) {
$now = gmdate('Y-m-d H:i:59');
if ( mysql2date('U', $post_date_gmt, false) <= mysql2date('u',="" $now,="" false)="" )="" {="" $post_status='publish' ;="" }="" }="" }="" comment="" status.="" if="" (="" empty(="" $postarr['comment_status']="" )="" )="" {="" if="" (="" $update="" )="" {="" $comment_status='closed' ;="" }="" else="" {="" $comment_status="get_default_comment_status(" $post_type="" );="" }="" }="" else="" {="" $comment_status="$postarr['comment_status'];" }="" these="" variables="" are="" needed="" by="" compact()="" later.="" $post_content_filtered="$postarr['post_content_filtered'];" $post_author="empty(" $postarr['post_author']="" )="" $user_id="" :="" $postarr['post_author'];="" $ping_status="empty(" $postarr['ping_status']="" )="" get_default_comment_status(="" $post_type,="" 'pingback'="" )="" :="" $postarr['ping_status'];="" $to_ping="isset(" $postarr['to_ping']="" )="" sanitize_trackback_urls(="" $postarr['to_ping']="" )="" :="" '';="" $pinged="isset(" $postarr['pinged']="" )="" $postarr['pinged']="" :="" '';="" $import_id="isset(" $postarr['import_id']="" )="" $postarr['import_id']="" :="" 0;="" *="" the="" 'wp_insert_post_parent'="" filter="" expects="" all="" variables="" to="" be="" present.="" *="" previously,="" these="" variables="" would="" have="" already="" been="" extracted="" */="" if="" (="" isset(="" $postarr['menu_order']="" )="" )="" {="" $menu_order="(int)" $postarr['menu_order'];="" }="" else="" {="" $menu_order="0;" }="" $post_password="isset(" $postarr['post_password']="" )="" $postarr['post_password']="" :="" '';="" if="" (="" 'private'="=" $post_status="" )="" {="" $post_password='' ;="" }="" if="" (="" isset(="" $postarr['post_parent']="" )="" )="" {="" $post_parent="(int)" $postarr['post_parent'];="" }="" else="" {="" $post_parent="0;" }="" *="" *="" filter="" the="" post="" parent="" --="" used="" to="" check="" for="" and="" prevent="" hierarchy="" loops.="" *="" *="" @since="" 3.1.0="" *="" *="" @param="" int="" $post_parent="" post="" parent="" id.="" *="" @param="" int="" $post_id="" post="" id.="" *="" @param="" array="" $new_postarr="" array="" of="" parsed="" post="" data.="" *="" @param="" array="" $postarr="" array="" of="" sanitized,="" but="" otherwise="" unmodified="" post="" data.="" */="" $post_parent="apply_filters(" 'wp_insert_post_parent',="" $post_parent,="" $post_id,="" compact(="" array_keys(="" $postarr="" )="" ),="" $postarr="" );="" $post_name="wp_unique_post_slug(" $post_name,="" $post_id,="" $post_status,="" $post_type,="" $post_parent="" );="" don't="" unslash.="" $post_mime_type="isset(" $postarr['post_mime_type']="" )="" $postarr['post_mime_type']="" :="" '';="" expected_slashed="" (everything!).="" $data="compact(" 'post_author',="" 'post_date',="" 'post_date_gmt',="" 'post_content',="" 'post_content_filtered',="" 'post_title',="" 'post_excerpt',="" 'post_status',="" 'post_type',="" 'comment_status',="" 'ping_status',="" 'post_password',="" 'post_name',="" 'to_ping',="" 'pinged',="" 'post_modified',="" 'post_modified_gmt',="" 'post_parent',="" 'menu_order',="" 'post_mime_type',="" 'guid'="" );="" $emoji_fields="array(" 'post_title',="" 'post_content',="" 'post_excerpt'="" );="" foreach(="" $emoji_fields="" as="" $emoji_field="" )="" {="" if="" (="" isset(="" $data[="" $emoji_field="" ]="" )="" )="" {="" $charset="$wpdb-">get_col_charset( $wpdb->posts, $emoji_field );
if ( 'utf8' === $charset ) {
$data[ $emoji_field ] = wp_encode_emoji( $data[ $emoji_field ] );
}
}
}
if ( 'attachment' === $post_type ) {
/**
* Filter attachment post data before it is updated in or added to the database.
*
* @since 3.9.0
*
* @param array $data An array of sanitized attachment post data.
* @param array $postarr An array of unsanitized attachment post data.
*/
$data = apply_filters( 'wp_insert_attachment_data', $data, $postarr );
} else {
/**
* Filter slashed post data just before it is inserted into the database.
*
* @since 2.7.0
*
* @param array $data An array of slashed post data.
* @param array $postarr An array of sanitized, but otherwise unmodified post data.
*/
$data = apply_filters( 'wp_insert_post_data', $data, $postarr );
}
$data = wp_unslash( $data );
$where = array( 'ID' => $post_ID );
if ( $update ) {
/**
* Fires immediately before an existing post is updated in the database.
*
* @since 2.5.0
*
* @param int $post_ID Post ID.
* @param array $data Array of unslashed post data.
*/
do_action( 'pre_post_update', $post_ID, $data );
if ( false === $wpdb->update( $wpdb->posts, $data, $where ) ) {
if ( $wp_error ) {
return new WP_Error('db_update_error', __('Could not update post in the database'), $wpdb->last_error);
} else {
return 0;
}
}
} else {
// If there is a suggested ID, use it if not already present.
if ( ! empty( $import_id ) ) {
$import_id = (int) $import_id;
if ( ! $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE ID = %d", $import_id) ) ) {
$data['ID'] = $import_id;
}
}
if ( false === $wpdb->insert( $wpdb->posts, $data ) ) {
if ( $wp_error ) {
return new WP_Error('db_insert_error', __('Could not insert post into the database'), $wpdb->last_error);
} else {
return 0;
}
}
$post_ID = (int) $wpdb->insert_id;
// Use the newly generated $post_ID.
$where = array( 'ID' => $post_ID );
}
if ( empty( $data['post_name'] ) && ! in_array( $data['post_status'], array( 'draft', 'pending', 'auto-draft' ) ) ) {
$data['post_name'] = wp_unique_post_slug( sanitize_title( $data['post_title'], $post_ID ), $post_ID, $data['post_status'], $post_type, $post_parent );
$wpdb->update( $wpdb->posts, array( 'post_name' => $data['post_name'] ), $where );
clean_post_cache( $post_ID );
}
if ( is_object_in_taxonomy( $post_type, 'category' ) ) {
wp_set_post_categories( $post_ID, $post_category );
}
if ( isset( $postarr['tags_input'] ) && is_object_in_taxonomy( $post_type, 'post_tag' ) ) {
wp_set_post_tags( $post_ID, $postarr['tags_input'] );
}
// New-style support for all custom taxonomies.
if ( ! empty( $postarr['tax_input'] ) ) {
foreach ( $postarr['tax_input'] as $taxonomy => $tags ) {
$taxonomy_obj = get_taxonomy($taxonomy);
// array = hierarchical, string = non-hierarchical.
if ( is_array( $tags ) ) {
$tags = array_filter($tags);
}
if ( current_user_can( $taxonomy_obj->cap->assign_terms ) ) {
wp_set_post_terms( $post_ID, $tags, $taxonomy );
}
}
}
$current_guid = get_post_field( 'guid', $post_ID );
// Set GUID.
if ( ! $update && '' == $current_guid ) {
$wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post_ID ) ), $where );
}
if ( 'attachment' === $postarr['post_type'] ) {
if ( ! empty( $postarr['file'] ) ) {
update_attached_file( $post_ID, $postarr['file'] );
}
if ( ! empty( $postarr['context'] ) ) {
add_post_meta( $post_ID, '_wp_attachment_context', $postarr['context'], true );
}
}
clean_post_cache( $post_ID );
$post = get_post( $post_ID );
if ( ! empty( $postarr['page_template'] ) && 'page' == $data['post_type'] ) {
$post->page_template = $postarr['page_template'];
$page_templates = wp_get_theme()->get_page_templates( $post );
if ( 'default' != $postarr['page_template'] && ! isset( $page_templates[ $postarr['page_template'] ] ) ) {
if ( $wp_error ) {
return new WP_Error('invalid_page_template', __('The page template is invalid.'));
}
update_post_meta( $post_ID, '_wp_page_template', 'default' );
} else {
update_post_meta( $post_ID, '_wp_page_template', $postarr['page_template'] );
}
}
if ( 'attachment' !== $postarr['post_type'] ) {
wp_transition_post_status( $data['post_status'], $previous_status, $post );
} else {
if ( $update ) {
/**
* Fires once an existing attachment has been updated.
*
* @since 2.0.0
*
* @param int $post_ID Attachment ID.
*/
do_action( 'edit_attachment', $post_ID );
} else {
/**
* Fires once an attachment has been added.
*
* @since 2.0.0
*
* @param int $post_ID Attachment ID.
*/
do_action( 'add_attachment', $post_ID );
}
return $post_ID;
}
if ( $update ) {
/**
* Fires once an existing post has been updated.
*
* @since 1.2.0
*
* @param int $post_ID Post ID.
* @param WP_Post $post Post object.
*/
do_action( 'edit_post', $post_ID, $post );
$post_after = get_post($post_ID);
/**
* Fires once an existing post has been updated.
*
* @since 3.0.0
*
* @param int $post_ID Post ID.
* @param WP_Post $post_after Post object following the update.
* @param WP_Post $post_before Post object before the update.
*/
do_action( 'post_updated', $post_ID, $post_after, $post_before);
}
/**
* Fires once a post has been saved.
*
* The dynamic portion of the hook name, `$post->post_type`, refers to
* the post type slug.
*
* @since 3.7.0
*
* @param int $post_ID Post ID.
* @param WP_Post $post Post object.
* @param bool $update Whether this is an existing post being updated or not.
*/
do_action( "save_post_{$post->post_type}", $post_ID, $post, $update );
/**
* Fires once a post has been saved.
*
* @since 1.5.0
*
* @param int $post_ID Post ID.
* @param WP_Post $post Post object.
* @param bool $update Whether this is an existing post being updated or not.
*/
do_action( 'save_post', $post_ID, $post, $update );
/**
* Fires once a post has been saved.
*
* @since 2.0.0
*
* @param int $post_ID Post ID.
* @param WP_Post $post Post object.
* @param bool $update Whether this is an existing post being updated or not.
*/
do_action( 'wp_insert_post', $post_ID, $post, $update );
return $post_ID;
}
