搜索
首页后端开发php教程将Session写入数据库，Session写入数据库_PHP教程

将Session写入数据库，Session写入数据库_PHP教程

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
Jul 13, 2016 am 09:57 AM
session

将Session写入数据库，Session写入数据库

使用session_set_save_handler()函数，将Session的内容写入数据库

<span>  1</span> <?<span>php
</span><span>  2</span>     <span>/*</span>
<span>  3</span> <span>    *@author    Fahy
</span><span>  4</span> <span>    *@link    http://home.cnblogs.com/u/HuangWj
</span><span>  5</span> <span>    *数据库为mysql，
</span><span>  6</span> <span>    *数据库名为session，表名为session，
</span><span>  7</span> <span>    *表中字段包括PHPSESSID,update_time,client_ip,data
</span><span>  8</span>     <span>*/</span>
<span>  9</span>     <span>class</span><span> Session{
</span><span> 10</span>         <span>private</span> <span>static</span> <span>$handler</span> = <span>null</span><span>;
</span><span> 11</span>         <span>private</span> <span>static</span> <span>$ip</span> = <span>null</span><span>;
</span><span> 12</span>         <span>private</span> <span>static</span> <span>$lifetime</span> = <span>null</span><span>;
</span><span> 13</span>         <span>private</span> <span>static</span> <span>$time</span> = <span>null</span><span>;
</span><span> 14</span>         
<span> 15</span>         <span>//</span><span>配置静态变量</span>
<span> 16</span>         <span>private</span> <span>static</span> <span>function</span> init(<span>$handler</span><span>){
</span><span> 17</span>             self::<span>$handler</span> = <span>$handler</span>;        <span>//</span><span>获取数据库资源</span>
<span> 18</span>             self::<span>$ip</span> = !<span>empty</span>(<span>$_SERVER</span>["REMOTE_ADDR"])? <span>$_SERVER</span>["REMOTE_ADDR"]:'unkonw';        <span>//</span><span>获取客户端ip</span>
<span> 19</span>             self::<span>$lifetime</span> = <span>ini_get</span>('session.gc_maxlifetime');        <span>//</span><span>获取session生命周期</span>
<span> 20</span>             self::<span>$time</span> = <span>time</span>();        <span>//</span><span>获取当前时间</span>
<span> 21</span> <span>        }
</span><span> 22</span>         <span>//</span><span>调用session_set_save_handler()函数并开启session</span>
<span> 23</span>         <span>static</span> <span>function</span> start(<span>$pdo</span><span>){
</span><span> 24</span>             self::init(<span>$pdo</span><span>);
</span><span> 25</span>             <span>session_set_save_handler</span><span>(
</span><span> 26</span>                 <span>array</span>(<span>__CLASS__</span>,'open'),
<span> 27</span>                 <span>array</span>(<span>__CLASS__</span>,'close'),
<span> 28</span>                 <span>array</span>(<span>__CLASS__</span>,'read'),
<span> 29</span>                 <span>array</span>(<span>__CLASS__</span>,'write'),
<span> 30</span>                 <span>array</span>(<span>__CLASS__</span>,'destroy'),
<span> 31</span>                 <span>array</span>(<span>__CLASS__</span>,'gc'<span>)
</span><span> 32</span> <span>            );
</span><span> 33</span>             <span>session_start</span><span>();
</span><span> 34</span> <span>        }
</span><span> 35</span>         
<span> 36</span>         <span>public</span> <span>static</span> <span>function</span> open(<span>$path</span>,<span>$name</span><span>){
</span><span> 37</span>             <span>return</span> <span>true</span><span>;
</span><span> 38</span> <span>        }
</span><span> 39</span>         <span>public</span> <span>static</span> <span>function</span><span> close(){
</span><span> 40</span>             <span>return</span> <span>true</span><span>;
</span><span> 41</span> <span>        }
</span><span> 42</span>         
<span> 43</span>         <span>//</span><span>查询数据库中的数据</span>
<span> 44</span>         <span>public</span> <span>static</span> <span>function</span> read(<span>$PHPSESSID</span><span>){
</span><span> 45</span>              <span>$sql</span> = "select PHPSESSID,update_time,client_ip,data from session where PHPSESSID=?"<span>;
</span><span> 46</span>              <span>$stmt</span> = self::<span>$handler</span>->prepare(<span>$sql</span><span>);
</span><span> 47</span>              <span>$stmt</span>->execute(<span>array</span>(<span>$PHPSESSID</span><span>));
</span><span> 48</span>              <span>if</span>(!<span>$result</span> = <span>$stmt</span>->fetch(PDO::<span>FETCH_ASSOC)){
</span><span> 49</span>                  <span>return</span> ''<span>;
</span><span> 50</span> <span>             }
</span><span> 51</span>              <span>if</span>(self::<span>$ip</span> == <span>$result</span>['client_ip'<span>]){
</span><span> 52</span>                  self::destroy(<span>$PHPSESSID</span><span>);
</span><span> 53</span>                  <span>return</span> ''<span>;
</span><span> 54</span> <span>             }
</span><span> 55</span>              <span>if</span>((<span>$result</span>['update_time']+self::<span>$lifetime</span>)<self::<span>$time</span><span>){
</span><span> 56</span>                  self::destroy(<span>$PHPSESSID</span><span>);
</span><span> 57</span>                  <span>return</span> ''<span>;
</span><span> 58</span> <span>             }
</span><span> 59</span>              <span>return</span> <span>$result</span>['data'<span>];
</span><span> 60</span> <span>        }
</span><span> 61</span>         <span>/*</span>
<span> 62</span> <span>         *首先查询该session是否存在数据，如果存在，则更新数据，如果不存在，则插入数据
</span><span> 63</span>          <span>*/</span>
<span> 64</span>         <span>//</span><span>将session写入数据库中，$data传入session中的keys和values数组</span>
<span> 65</span>         <span>public</span> <span>static</span> <span>function</span> write(<span>$PHPSESSID</span>,<span>$data</span><span>){
</span><span> 66</span>             <span>$sql</span> = "select PHPSESSID,update_time,client_ip,data from session where PHPSESSID=?"<span>;
</span><span> 67</span>              <span>$stmt</span> = self::<span>$handler</span>->prepare(<span>$sql</span><span>);
</span><span> 68</span>              <span>$stmt</span>->execute(<span>array</span>(<span>$PHPSESSID</span><span>));
</span><span> 69</span>              
<span> 70</span>              <span>if</span>(<span>$result</span>=<span>$stmt</span>->fetch(PDO::<span>FETCH_ASSOC)){                
</span><span> 71</span>                  <span>if</span>(<span>$result</span>['data'] != <span>$data</span> || self::<span>$time</span> > (<span>$result</span>['update_time']+30<span>)){
</span><span> 72</span>                      <span>$sql</span> = "update session set update_time=?,data=? where PHPSESSID = ?"<span>;
</span><span> 73</span>                      <span>$stmt</span> = self::<span>$handler</span>->prepare(<span>$sql</span><span>);
</span><span> 74</span>                      <span>$stmt</span>->execute(<span>array</span>(<span>$self</span>::<span>$time</span>,<span>$data</span>,<span>$PHPSESSID</span><span>));
</span><span> 75</span> <span>                }
</span><span> 76</span>              }<span>else</span><span>{
</span><span> 77</span>                  <span>if</span>(!<span>empty</span>(<span>$data</span><span>)){
</span><span> 78</span>                      <span>try</span><span>{
</span><span> 79</span>                          <span>$sql</span> = "insert into session(PHPSESSID,update_time,client_ip,data) values(?,?,?,?)"<span>;
</span><span> 80</span>                      }<span>catch</span>(PDOException <span>$e</span><span>){
</span><span> 81</span>                          <span>echo</span> <span>$e</span>-><span>getMessage();
</span><span> 82</span> <span>                     }
</span><span> 83</span>                      <span>$sth</span> = self::<span>$handler</span>->prepare(<span>$sql</span><span>);
</span><span> 84</span>                      <span>$sth</span>->execute(<span>array</span>(<span>$PHPSESSID</span>,self::<span>$time</span>,self::<span>$ip</span>,<span>$data</span><span>));
</span><span> 85</span> <span>                 }
</span><span> 86</span> <span>             }
</span><span> 87</span>              <span>return</span> <span>true</span><span>;
</span><span> 88</span> <span>        }
</span><span> 89</span>         
<span> 90</span>         <span>public</span> <span>static</span> <span>function</span> destroy(<span>$PHPSESSID</span><span>){
</span><span> 91</span>             <span>$sql</span> = "delete from session where PHPSESSID = ?"<span>;
</span><span> 92</span>             <span>$stmt</span> = self::<span>$handler</span>->prepare(<span>$sql</span><span>);
</span><span> 93</span>             <span>$stmt</span>->execute(<span>array</span>(<span>$PHPSESSID</span><span>));
</span><span> 94</span>             <span>return</span> <span>true</span><span>;
</span><span> 95</span> <span>        }
</span><span> 96</span>         <span>public</span> <span>static</span> <span>function</span> gc(<span>$lifetime</span><span>){
</span><span> 97</span>             <span>$sql</span> = "delete from session where update_time<?"<span>;
</span><span> 98</span>             <span>$stmt</span> = self::<span>$handler</span>->prepare(<span>$sql</span><span>);
</span><span> 99</span>             <span>$stmt</span>->execute(<span>array</span>(self::<span>$time</span>-<span>$lifetime</span><span>));
</span><span>100</span>             <span>return</span> <span>true</span><span>;
</span><span>101</span> <span>        }
</span><span>102</span> <span>    }
</span><span>103</span>     <span>//</span><span>使用PDO连接数据库</span>
<span>104</span>     <span>try</span><span>{
</span><span>105</span>         <span>$pdo</span> = <span>new</span> PDO("mysql:host=localhost;dbname=session","root","hwj193"<span>);
</span><span>106</span>     }<span>catch</span>(PDOException <span>$e</span><span>){
</span><span>107</span>         <span>echo</span> <span>$e</span>-><span>getMessage();
</span><span>108</span> <span>    }
</span><span>109</span>     <span>//</span><span>传递数据库资源</span>
<span>110</span>     Session::start(<span>$pdo</span>);

 

www.bkjia.comtruehttp://www.bkjia.com/PHPjc/980029.htmlTechArticle将Session写入数据库，Session写入数据库 使用session_set_save_handler()函数，将Session的内容写入数据库 1 ? php 2 /* 3 *@author Fahy 4 *@link http://home.cnb...
声明
本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系admin@php.cn
相关文章
超越炒作：评估当今PHP的角色超越炒作：评估当今PHP的角色Apr 12, 2025 am 12:17 AM

PHP在现代编程中仍然是一个强大且广泛使用的工具，尤其在web开发领域。1)PHP易用且与数据库集成无缝，是许多开发者的首选。2)它支持动态内容生成和面向对象编程，适合快速创建和维护网站。3)PHP的性能可以通过缓存和优化数据库查询来提升，其广泛的社区和丰富生态系统使其在当今技术栈中仍具重要地位。

PHP中的弱参考是什么？什么时候有用？PHP中的弱参考是什么？什么时候有用？Apr 12, 2025 am 12:13 AM

在PHP中，弱引用是通过WeakReference类实现的，不会阻止垃圾回收器回收对象。弱引用适用于缓存系统和事件监听器等场景，需注意其不能保证对象存活，且垃圾回收可能延迟。

解释PHP中的__ Invoke Magic方法。解释PHP中的__ Invoke Magic方法。Apr 12, 2025 am 12:07 AM

\_\_invoke方法允许对象像函数一样被调用。1.定义\_\_invoke方法使对象可被调用。2.使用$obj(...)语法时，PHP会执行\_\_invoke方法。3.适用于日志记录和计算器等场景，提高代码灵活性和可读性。

解释PHP 8.1中的纤维以进行并发。解释PHP 8.1中的纤维以进行并发。Apr 12, 2025 am 12:05 AM

Fibers在PHP8.1中引入，提升了并发处理能力。1)Fibers是一种轻量级的并发模型，类似于协程。2)它们允许开发者手动控制任务的执行流，适合处理I/O密集型任务。3)使用Fibers可以编写更高效、响应性更强的代码。

PHP社区：资源，支持和发展PHP社区：资源，支持和发展Apr 12, 2025 am 12:04 AM

PHP社区提供了丰富的资源和支持，帮助开发者成长。1)资源包括官方文档、教程、博客和开源项目如Laravel和Symfony。2)支持可以通过StackOverflow、Reddit和Slack频道获得。3)开发动态可以通过关注RFC了解。4)融入社区可以通过积极参与、贡献代码和学习分享来实现。

PHP与Python：了解差异PHP与Python：了解差异Apr 11, 2025 am 12:15 AM

PHP和Python各有优势，选择应基于项目需求。1.PHP适合web开发，语法简单，执行效率高。2.Python适用于数据科学和机器学习，语法简洁，库丰富。

php：死亡还是简单地适应？php：死亡还是简单地适应？Apr 11, 2025 am 12:13 AM

PHP不是在消亡，而是在不断适应和进化。1)PHP从1994年起经历多次版本迭代，适应新技术趋势。2)目前广泛应用于电子商务、内容管理系统等领域。3)PHP8引入JIT编译器等功能，提升性能和现代化。4)使用OPcache和遵循PSR-12标准可优化性能和代码质量。

PHP的未来：改编和创新PHP的未来：改编和创新Apr 11, 2025 am 12:01 AM

PHP的未来将通过适应新技术趋势和引入创新特性来实现：1)适应云计算、容器化和微服务架构，支持Docker和Kubernetes；2)引入JIT编译器和枚举类型，提升性能和数据处理效率；3)持续优化性能和推广最佳实践。

See all articles

热AI工具

Undresser.AI Undress

Undresser.AI Undress

人工智能驱动的应用程序，用于创建逼真的裸体照片

AI Clothes Remover

AI Clothes Remover

用于从照片中去除衣服的在线人工智能工具。

Undress AI Tool

Undress AI Tool

免费脱衣服图片

Clothoff.io

Clothoff.io

AI脱衣机

AI Hentai Generator

AI Hentai Generator

免费生成ai无尽的。

显示更多

热门文章

R.E.P.O.能量晶体解释及其做什么（黄色晶体）
3 周前By尊渡假赌尊渡假赌尊渡假赌
R.E.P.O.最佳图形设置
3 周前By尊渡假赌尊渡假赌尊渡假赌
刺客信条阴影：贝壳谜语解决方案
2 周前ByDDD
R.E.P.O.如果您听不到任何人，如何修复音频
3 周前By尊渡假赌尊渡假赌尊渡假赌
WWE 2K25：如何解锁Myrise中的所有内容
3 周前By尊渡假赌尊渡假赌尊渡假赌
显示更多

热工具

Atom编辑器mac版下载

Atom编辑器mac版下载

最流行的的开源编辑器

SecLists

SecLists

SecLists是最终安全测试人员的伙伴。它是一个包含各种类型列表的集合，这些列表在安全评估过程中经常使用，都在一个地方。SecLists通过方便地提供安全测试人员可能需要的所有列表，帮助提高安全测试的效率和生产力。列表类型包括用户名、密码、URL、模糊测试有效载荷、敏感数据模式、Web shell等等。测试人员只需将此存储库拉到新的测试机上，他就可以访问到所需的每种类型的列表。

DVWA

DVWA

Damn Vulnerable Web App (DVWA) 是一个PHP/MySQL的Web应用程序，非常容易受到攻击。它的主要目标是成为安全专业人员在合法环境中测试自己的技能和工具的辅助工具，帮助Web开发人员更好地理解保护Web应用程序的过程，并帮助教师/学生在课堂环境中教授/学习Web应用程序安全。DVWA的目标是通过简单直接的界面练习一些最常见的Web漏洞，难度各不相同。请注意，该软件中

SublimeText3 Linux新版

SublimeText3 Linux新版

SublimeText3 Linux最新版

EditPlus 中文破解版

EditPlus 中文破解版

体积小，语法高亮，不支持代码提示功能

显示更多

热门话题

gmail邮箱登陆入口在哪里
7468
15
CakePHP 教程
1376
52
steam的账户名称是什么格式
77
11
win11激活密钥永久
48
19
NYT连接提示和答案
19
27
显示更多