获取上次修改或发布任何帖子的时间戳。
原型
_get_last_post_time( string $timezone, string $field, string $post_type = 'any' )
参数
$timezone
(string)
(Required)
时间戳的时区。请参阅get_lastpostdate()。有关可接受值的信息。
$field
(string)
(Required)
发布字段来检查。接受’日期’或’修改’。
$post_type
(string)
(Optional)
要检查的帖子类型。
返回值
(string|false)
时间戳。
源文件
路径:wp-includes/post.php
<?php
...
function _get_last_post_time( $timezone, $field, $post_type = 'any' ) {
global $wpdb;
if ( ! in_array( $field, array( 'date', 'modified' ) ) ) {
return false;
}
$timezone = strtolower( $timezone );
$key = "lastpost{$field}:$timezone";
if ( 'any' !== $post_type ) {
$key .= ':' . sanitize_key( $post_type );
}
$date = wp_cache_get( $key, 'timeinfo' );
if ( false !== $date ) {
return $date;
}
if ( 'any' === $post_type ) {
$post_types = get_post_types( array( 'public' => true ) );
array_walk( $post_types, array( $wpdb, 'escape_by_ref' ) );
$post_types = "'" . implode( "', '", $post_types ) . "'";
} else {
$post_types = "'" . sanitize_key( $post_type ) . "'";
}
switch ( $timezone ) {
case 'gmt':
$date = $wpdb->get_var("SELECT post_{$field}_gmt FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1");
break;
case 'blog':
$date = $wpdb->get_var("SELECT post_{$field} FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1");
break;
case 'server':
$add_seconds_server = date( 'Z' );
$date = $wpdb->get_var("SELECT DATE_ADD(post_{$field}_gmt, INTERVAL '$add_seconds_server' SECOND) FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1");
break;
}
if ( $date ) {
wp_cache_set( $key, $date, 'timeinfo' );
return $date;
}
return false;
}
...
?>
其他
英文文档:https://developer.wordpress.org/reference/functions/_get_last_post_time/