shijiaoliang

                var a = document.getElementById("eq").offsetTop;
                if (a >= $(window).scrollTop() && a < ($(window).scrollTop()+$(window).height())) {
                    alert("div在可视范围");
                }

shijiaoliang

<?php
/**
 * @param string $string 原文或者密文
 * @param string $operation 操作(ENCODE | DECODE), 默认为 DECODE
 * @param string $key 密钥
 * @param int $expiry 密文有效期, 加密时候有效， 单位 秒，0 为永久有效
 * @return string 处理后的 原文或者 经过 base64_encode 处理后的密文
 *
 **/
function authcode($string, $operation = 'DECODE', $key = '', $expiry = 3600)

shijiaoliang

<?php
/*
OCP - Opcache Control Panel   (aka Zend Optimizer+ Control Panel for PHP)
Author: _ck_   (with contributions by GK, stasilok)
Version: 0.1.7
Free for any kind of use or modification, I am not responsible for anything, please share your improvements

* revision history
0.1.7  2015-09-01  regex fix for PHP7 phpinfo
0.1.6  2013-04-12  moved meta to footer so graphs can be higher and reduce clutter