php中判断自定义方法是否存在

PHP Code one: //php获取ip的算法
$iipp=$_SERVER["REMOTE_ADDR"];
echo $iipp; PHP Code two: //php获取ip的算法
$user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];
$user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"];
echo $ ......

<?php
class main extends spController
{
    function index(){
    echo "<p align=center><h1>HIS基础数据维护</h1>";
    echo "<p align=center><h2>科室字典</h2>";
    $contentsurl=spUrl("main", "i ......

<?PHP
//====================================================
//                FileName:        snap.class.php
//             ......