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PHP实现简单注册登录详细全部代码

幻影网络

发布于 2022-11-08 08:06:20

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代码可运行

文章被收录于专栏：幻影网络科技幻影网络科技

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代码可运行

教程开始

PHP实现登录注册的三个文件： index.php (首页) login.php (登录) register.php (注册) 相关代码 index.php代码：

&lt;!DOCTYPE html&gt; 
&lt;html&gt; 
&lt;head&gt; 
&lt;meta charset=&quot;utf-8&quot;&gt; &lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1&quot;&gt; 
&lt;title&gt;Xnsay - &#x6CE8;&#x518C;&#x767B;&#x5F55;&lt;/title&gt; 
&lt;link rel=&quot;stylesheet&quot; type=&quot;text/css&quot; href=&quot;https://www.layuicdn.com/layui/css/layui.css&quot; /&gt; 
&lt;script src=&quot;https://www.layuicdn.com/layui/layui.js&quot; charset=&quot;utf-8&quot;&gt;&lt;/script&gt; 
&lt;/head&gt; 
&lt;body&gt; 
&lt;fieldset class=&quot;layui-elem-field layui-field-title&quot; style=&quot;margin-top: 20px;&quot;&gt; 
&lt;legend&gt;Zhe - &#x767B;&#x5F55;&#x6CE8;&#x518C;&#x6F14;&#x793A;&lt;/legend&gt; &lt;/fieldset&gt; 
&lt;div style=&quot;padding: 20px; background-color: #F2F2F2;&quot;&gt; 
&lt;div class=&quot;layui-row layui-col-space15&quot;&gt; 
&lt;div class=&quot;layui-col-md6&quot;&gt; &lt;div class=&quot;layui-card&quot;&gt; 
&lt;div class=&quot;layui-card-header&quot;&gt;&#x6CE8;&#x518C;&lt;/div&gt; 
&lt;div class=&quot;layui-card-body&quot;&gt;
 &lt;form class=&quot;layui-form&quot; action=&quot;register.php&quot; method=&quot;post&quot; onsubmit=&quot;return checkForm(this)&quot; lay-filter=&quot;example&quot;&gt; &lt;div class=&quot;layui-form-item&quot;&gt; &lt;label class=&quot;layui-form-label&quot;&gt;&#x8F93;&#x5165;&#x6846;&lt;/label&gt; &lt;div class=&quot;layui-input-block&quot;&gt; &lt;input type=&quot;text&quot; name=&quot;username&quot; placeholder=&quot;&#x8BF7;&#x8F93;&#x5165;&#x8D26;&#x53F7;&quot; class=&quot;layui-input&quot;&gt; &lt;/div&gt; &lt;/div&gt; &lt;div class=&quot;layui-form-item&quot;&gt; &lt;label class=&quot;layui-form-label&quot;&gt;&#x5BC6;&#x7801;&#x6846;&lt;/label&gt; &lt;div class=&quot;layui-input-block&quot;&gt; &lt;input type=&quot;password&quot; name=&quot;password&quot; placeholder=&quot;&#x8BF7;&#x8F93;&#x5165;&#x5BC6;&#x7801;&quot; class=&quot;layui-input&quot;&gt; &lt;/div&gt; &lt;/div&gt; &lt;div class=&quot;layui-form-item&quot;&gt; &lt;div class=&quot;layui-input-block&quot;&gt; &lt;input type=&quot;submit&quot; class=&quot;layui-btn layui-btn-normal&quot; value=&quot;&#x7ACB;&#x5373;&#x6CE8;&#x518C;&quot;/&gt; &lt;/div&gt; &lt;/div&gt; &lt;/form&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;div class=&quot;layui-col-md6&quot;&gt; &lt;div class=&quot;layui-card&quot;&gt; &lt;div class=&quot;layui-card-header&quot;&gt;&#x767B;&#x5F55;&lt;/div&gt; &lt;div class=&quot;layui-card-body&quot;&gt; &lt;form class=&quot;layui-form&quot; action=&quot;login.php&quot; method=&quot;post&quot; onsubmit=&quot;return checkForm(this)&quot; lay-filter=&quot;example&quot;&gt; &lt;div class=&quot;layui-form-item&quot;&gt; &lt;label class=&quot;layui-form-label&quot;&gt;&#x8F93;&#x5165;&#x6846;&lt;/label&gt; &lt;div class=&quot;layui-input-block&quot;&gt; &lt;input type=&quot;text&quot; name=&quot;username&quot; placeholder=&quot;&#x8BF7;&#x8F93;&#x5165;&#x8D26;&#x53F7;&quot; class=&quot;layui-input&quot;&gt; &lt;/div&gt; &lt;/div&gt; &lt;div class=&quot;layui-form-item&quot;&gt; &lt;label class=&quot;layui-form-label&quot;&gt;&#x5BC6;&#x7801;&#x6846;&lt;/label&gt; &lt;div class=&quot;layui-input-block&quot;&gt; &lt;input type=&quot;password&quot; name=&quot;password&quot; placeholder=&quot;&#x8BF7;&#x8F93;&#x5165;&#x5BC6;&#x7801;&quot; class=&quot;layui-input&quot;&gt; &lt;/div&gt; &lt;/div&gt; &lt;div class=&quot;layui-form-item&quot;&gt; &lt;div class=&quot;layui-input-block&quot;&gt; &lt;input type=&quot;submit&quot; class=&quot;layui-btn layui-btn-normal&quot; value=&quot;&#x7ACB;&#x5373;&#x767B;&#x5F55;&quot;/&gt; &lt;/div&gt; &lt;/div&gt; &lt;/form&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;script type=&quot;text/javascript&quot;&gt; // &#x9A8C;&#x8BC1;&#x8F93;&#x5165;&#x4E0D;&#x4E3A;&#x7A7A;&#x7684;&#x811A;&#x672C;&#x4EE3;&#x7801; function checkForm(form) { if(form.username.value == &quot;&quot;) { alert(&quot;&#x7528;&#x6237;&#x540D;&#x4E0D;&#x80FD;&#x4E3A;&#x7A7A;!&quot;); form.username.focus(); return false; } if(form.password.value == &quot;&quot;) { alert(&quot;&#x5BC6;&#x7801;&#x4E0D;&#x80FD;&#x4E3A;&#x7A7A;!&quot;); form.password.focus(); return false; } return true; } &lt;/script&gt; &lt;/body&gt; &lt;/html&gt;

&lt;?php session_start(); 
header(&quot;content-type:text/html;charset=utf-8&quot;); //&#x8FDE;&#x63A5;&#x6570;&#x636E;&#x5E93;
$link = mysqli_connect(&quot;localhost&quot;,&quot;pay_com_cn&quot;,&quot;pay_com_cn&quot;,&quot;pay_com_cn&quot;); 
if (!$link) { die(&quot;&#x8FDE;&#x63A5;&#x5931;&#x8D25;: &quot; . mysqli_connect_error()); } //&#x63A5;&#x6536;$_POST&#x7528;&#x6237;&#x540D;&#x548C;&#x5BC6;&#x7801; $username = $_POST[&apos;username&apos;]; 
$password = $_POST[&apos;password&apos;]; //&#x67E5;&#x770B;&#x8868;user&#x7528;&#x6237;&#x540D;&#x4E0E;&#x5BC6;&#x7801;&#x548C;&#x4F20;&#x8F93;&#x503C;&#x662F;&#x5426;&#x76F8;&#x7B49; $sql = &quot;SELECT * FROM user WHERE username = &apos;$username&apos; AND password = &apos;$password&apos;&quot;; //result&#x5FC5;&#x9700;&#x89C4;&#x5B9A;&#x7531; mysqli_query()&#x3001;mysqli_store_result() &#x6216; mysqli_use_result() &#x8FD4;&#x56DE;&#x7684;&#x7ED3;&#x679C;&#x96C6;&#x6807;&#x8BC6;&#x7B26;&#x3002;
$result = mysqli_query($link,$sql); 
$num = mysqli_num_rows($result);//&#x51FD;&#x6570;&#x8FD4;&#x56DE;&#x7ED3;&#x679C;&#x96C6;&#x4E2D;&#x884C;&#x7684;&#x6570;&#x91CF; //&#x5224;&#x65AD;&#x662F;&#x5426;&#x767B;&#x5F55;&#x540E;&#x663E;&#x793A;&#x6216;&#x8DF3;&#x8F6C; if($num){ echo &apos;&#x767B;&#x5F55;&#x6210;&#x529F;&apos;; }else{ echo&apos;&#x767B;&#x5F55;&#x5931;&#x8D25;&apos;; } mysqli_close($link);//&#x5173;&#x95ED;&#x6570;&#x636E;&#x5E93; 
?&gt;

&lt;?php header(&quot;content-type:text/html;charset=utf-8&quot;); //&#x8FDE;&#x63A5;&#x6570;&#x636E;&#x5E93; $link = mysqli_connect(&quot;localhost&quot;,&quot;pay_com_cn&quot;,&quot;pay_com_cn&quot;,&quot;pay_com_cn&quot;); 
if (!$link) { die(&quot;&#x8FDE;&#x63A5;&#x5931;&#x8D25;: &quot; . mysqli_connect_error()); } //&#x63A5;&#x6536;$_POST&#x7528;&#x6237;&#x540D;&#x548C;&#x5BC6;&#x7801; $username=$_POST[&apos;username&apos;]; $password=$_POST[&apos;password&apos;]; //&#x67E5;&#x770B;&#x8868;user&#x7528;&#x6237;&#x540D;&#x662F;&#x5426;&#x5B58;&#x5728;&#x6216;&#x4E3A;&#x7A7A; $sql_select = &quot;SELECT * FROM user WHERE username = &apos;$username&apos;&quot;; //result&#x5FC5;&#x9700;&#x89C4;&#x5B9A;&#x7531; mysqli_query()&#x3001;mysqli_store_result() &#x6216; mysqli_use_result() &#x8FD4;&#x56DE;&#x7684;&#x7ED3;&#x679C;&#x96C6;&#x6807;&#x8BC6;&#x7B26;&#x3002;
$select = mysqli_query($link,$sql_select); 
$num = mysqli_num_rows($select);//&#x51FD;&#x6570;&#x8FD4;&#x56DE;&#x7ED3;&#x679C;&#x96C6;&#x4E2D;&#x884C;&#x7684;&#x6570;&#x91CF; 
if($username == &quot;&quot; || $password == &quot;&quot;) { echo &quot;&#x8BF7;&#x786E;&#x8BA4;&#x4FE1;&#x606F;&#x5B8C;&#x6574;&#x6027;&quot;; }else if($num){ echo &quot;&#x5DF2;&#x5B58;&#x5728;&#x7528;&#x6237;&#x540D;&quot;;//&#x5DF2;&#x5B58;&#x5728;&#x8D26;&#x6237;&#x540D;&#x8F93;&#x51FA;&#x9519;&#x8BEF; }else{ $sql=&quot;insert into user(username,password) values(&apos;$username&apos;,&apos;$password&apos;)&quot;;$result=mysqli_query($link,$sql); //&#x5224;&#x65AD;&#x662F;&#x5426;&#x6CE8;&#x518C;&#x540E;&#x663E;&#x793A;&#x5185;&#x5BB9; if(!$result) { echo &quot;&#x6CE8;&#x518C;&#x4E0D;&#x6210;&#x529F;&#xFF01;&quot;.&quot;&lt;br&gt;&quot;;//&#x8F93;&#x51FA;&#x9519;&#x8BEF; echo &quot;&lt;a href=&apos;index.php&apos;&gt;&#x8FD4;&#x56DE;&lt;/a&gt;&quot;;//&#x8D85;&#x94FE;&#x63A5;&#x5230;&#x9996;&#x9875; } else { echo &quot;&#x6CE8;&#x518C;&#x6210;&#x529F;!&quot;.&quot;&lt;br/&gt;&quot;;//&#x8F93;&#x51FA;&#x6210;&#x529F; echo &quot;&lt;a href=&apos;index.hphp&apos;&gt;&#x7ACB;&#x523B;&#x767B;&#x5F55;&lt;/a&gt;&quot;;//&#x8D85;&#x94FE;&#x63A5;&#x5230;&#x9996;&#x9875; } } ?&gt;