原文：http://www.blogjava.net/forget/archive/2006/06/17/53462.aspx
（本文来源于图老师网站，更多请访问https://m.tulaoshi.com/php/）在php中输出返回上一级的代码:
echo "<a href=".$_SERVER["HTTP_REFERER"]."点击这里返回</a";
在wap中的代码是:
<?php
@header("Content-Type:text/vnd.wap.wml");
?
<?xml version="1.0" encoding="utf-8"?
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.3//EN" "http://www.wapforum.org/DTD/wml13.dtd"
<wml
<head
<meta http-equiv="expires" content="0" /
</head
<card title="输入标题"
<do type="prev" label="返回上页"
<prev/
<!--provide a button you can clink to back a step--
</do<br/
<!--<anchor
<prev/后退
</anchor--
</card
</wml
在wap中打电话的代码:
<?php
@header("Content-Type:text/vnd.wap.wml");
?
<?xml version="1.0" encoding="utf-8"?
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.3//EN" "http://www.wapforum.org/DTD/wml13.dtd"
<wml
<head
<meta http-equiv="expires" content="0" /
</head
<card title="标题"
<p
<input name="phone_no" format="*m" value="13"/
<do type="option"
<go href="wtai://wp/mc;$(phone_no)"/
</do<br/
或者
<a href="wtai://wp/mc;13333333333"拨打电话</a
<br /
</p
</card
</wml
<?xml version="1.0"?
<!DOCTYPE CHARACTERISTIC-LIST SYSTEM "/DTD/characteristic_list.xml"
<CHARACTERISTIC-LIST
<CHARACTERISTIC TYPE="ADDRESS"
<PARM NAME="BEARER" VALUE="GPRS"/
<PARM NAME="PROXY" VALUE="10.0.0.172"/
<PARM NAME="PORT" VALUE="9201"/
<PARM NAME="GPRS_ACCESSPOINTNAME" VALUE="wap.02826.com"/
<PARM NAME="PPP_AUTHTYPE" VALUE="PAP"/
</CHARACTERISTIC
<CHARACTERISTIC TYPE="NAME"
<PARM NAME="NAME" VALUE="wmzsoft GPRS"/
</CHARACTERISTIC
<CHARACTERISTIC TYPE="BOOKMARK"/
<PARM NAME="NAME" VALUE="02826"/
<PARM NAME="URL" VALUE=" http://wap.02826.com "/
</CHARACTERISTIC
</CHARACTERISTIC-LIST
