wp_original_referer_field( bool $echo = true, string $jump_back_to = ‘current’ )

检索或显示窗体的原始referer隐藏字段。
Retrieve or display original referer hidden field for forms.

目录锚点：#说明#参数#源码

说明（Description）

输入名称为”u wp_original_http_referer’，如果该名称已发布，则将与wp_referer_field（）的值相同；如果不存在，则它将是当前页。

参数（Parameters）

源码（Source）

/**
 * Retrieve or display original referer hidden field for forms.
 *
 * The input name is '_wp_original_http_referer' and will be either the same
 * value of wp_referer_field(), if that was posted already or it will be the
 * current page, if it doesn't exist.
 *
 * @since 2.0.4
 *
 * @param bool   $echo         Optional. Whether to echo the original http referer. Default true.
 * @param string $jump_back_to Optional. Can be 'previous' or page you want to jump back to.
 *                             Default 'current'.
 * @return string Original referer field.
 */
function wp_original_referer_field( $echo = true, $jump_back_to = 'current' ) {
	if ( ! $ref = wp_get_original_referer() ) {
		$ref = 'previous' == $jump_back_to ? wp_get_referer() : wp_unslash( $_SERVER['REQUEST_URI'] );
	}
	$orig_referer_field = '';
	if ( $echo )
		echo $orig_referer_field;
	return $orig_referer_field;
}