PHP的一些案例研究(二)
一、mysql学习:
1、完成数据表导出为xml文件(命令行,mysql.exe)、csv文件(outfile);2、命令行导出指定记录,生成sql文件(mysqldump);
3、sql语句查询记录,并插入到指定表(insert...select...where....);
4、myisam表的简单修复(myisamchk -r table);
5、CASE WHEN的使用,
SELECT CASE
WHEN 10*2=30 THEN '30 correct'
WHEN 10*2=40 THEN '40 correct'
ELSE 'Should be 10*2=20'
END; 。
二、利用成语接龙api接口抓取对方数据库成语:
1、手工测试成语的准确性;经测试输入不是成语或者没有解词时,返回成语失败;输入同一成语可能返回不同的解词;2、构建数据表,书写程序;预先设定一个成语,然后把返回结果入库,之后就不停的请求库里的成语,将返回结果入库并以此进行下一步请求;
3、开始成语:一马当先
运行时间 成语数
1小时20分 4900左右
2小时 7100左右
1天(停止过2次,时间不知) 18178左右
2天(有停止过) 29,197
已不能采集,不知道是否被限制了
4、成语应该也就三万左右的样子。
三、Javascript Regular Expression Visualizer:
1、纯js代码,提供了正则可视化、图片输出、嵌入到网页的功能;
2、可视化就是把js正则以图形的形式表现出来;图片输出是把正则图形化后生成图片,应该是网页标签截图;嵌入到网页是使用iframe。
四、基于jquery的webweb弹层组件??layer学习使用:
基于juqery1.8以上版本,代码简单,提供体验友好的弹出层,共有信息框、页面层、iframe层、加载层、tips层。五、研读《阿里巴巴集团web安全标准》
不要相信用户的任何输入;用户标识,保证不会被hacker伪装;代码规范。StringUtil.htmlEscape() TOKEN
六、测试一台计算机是否开机
$rs=`ping 10.10.10.123`;$status=preg_match('%TTL=\d+%',$rs)?'yes':'no';
echo $status;
?>
前提:运行php的服务器有操作系统命令的权限
七、雪花飘落插件
雪花是一张图片,通过控制图片的尺寸可以控制雪花的大小,然后用js控制悬浮在不同的层,呈飘落状。八、猜拳小游戏---传统的石头剪刀布的web版
使用一个随机数来确定电脑的值,然后把电脑的值和用户选择的值进行对比,确定胜负。主要代码:
Guess.onclick =function(){
var num = Math.floor(Math.random()*3 +1 );
if (num==1) {
computer.value="石头";
} else if (num==2) {
computer.value="剪刀";
} else if(num==3) {
computer.value="布";
}
var mineValue = mine.value;
var computerValue = computer.value;
if (mineValue==computerValue) {
alert("平局")
} else if (mineValue=="剪刀") {
alert(computerValue=="石头"?"you win":"lost")
} else if (mineValue=="石头") {
alert(computerValue=="布"?"you win":"lost")
} else if (mineValue=="布") {
alert(computerValue=="剪刀"?"you win":"lost")
}
mine.value ="";
computer.value ="";
}
九、幻灯片展示框架 Fathom.js
使用 HTML 和 CSS 实现了在浏览器上的幻灯片展示效果,基于 jQuery 开发,横向滑动条显示幻灯片。

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