├── README.md
├── database.json
├── server.php
└── index.html
/README.md:
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1 | # xchat
2 | A simple chat room based on Ajax long polling
3 |
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/database.json:
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1 | [{"time":"1595939294719","name":"TEST","input":"\u6d4b\u8bd5"}]
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/server.php:
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1 | read('database.json');
14 | if(empty($arr))
15 | {
16 | $arr = array();
17 | }
18 | // 获取原来的数据库
19 | $num = count($arr);
20 | if($num >= MAX)
21 | {
22 | //设置最大保存信息个数,防止boom
23 | unset($arr[0]); //删除第一个(最老的)
24 | $arr[$num] = array(
25 | 'time' => $time,
26 | 'name' => $name,
27 | 'input' => $input
28 | );
29 | $arr = array_values ($arr);//重新建立索引
30 | } else {
31 | $arr[$num] = array(
32 | 'time' => $time,
33 | 'name' => $name,
34 | 'input' => $input
35 | );
36 | }
37 | $data = json_encode($arr);
38 | $f ->write('database.json',$data);
39 | echo '200';
40 | break;
41 | case 'GET':
42 | while(true){
43 | $f = new file();
44 | $arr = $f -> read('database.json');
45 | $j = 0;
46 | $NEW = array();
47 | if(empty($arr))
48 | {
49 | $arr = array(); //初始话
50 | }
51 | for($i = 0;$i <= count($arr) -1;$i++)
52 | {
53 | if((double)$arr[$i]['time'] >= (double)$time)
54 | {
55 | $NEW[$j] = $arr[$i];
56 | $timex = substr($arr[$i]['time'],0,-3); //时间戳转换为时间
57 | $NEW[$j]['time'] = date("m/d H:i:s",$timex);
58 | $j++;
59 | }
60 | }
61 | // 获取原来的数据库遍历查询新消息
62 | if(!empty($NEW[0]))
63 | {
64 | echo json_encode($NEW);
65 | break;
66 | }
67 | usleep(SLEEP);
68 | }
69 | break;
70 | }
71 |
72 | class file {
73 | function write($filepath,$content) {
74 | file_put_contents($filepath, $content);
75 | }
76 | function read($filepath) {
77 | if (file_exists($filepath)) {
78 | $str = file_get_contents($filepath);
79 | return json_decode($str,true);
80 | } else {
81 | self::write($filepath,'');
82 | }
83 | }
84 | }
85 | ?>
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/index.html:
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1 |
2 |
3 |
4 |
5 |
6 |
7 | XCHAT
8 |
9 |
10 |
11 |
12 |
13 | 用户名和信息不能为空
14 |
15 |
16 |
17 |
18 |
91 |
92 |
93 |
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