利用PHP怎么實(shí)現(xiàn)一個(gè)登錄注冊(cè)功能

利用PHP怎么實(shí)現(xiàn)一個(gè)登錄注冊(cè)功能？針對(duì)這個(gè)問(wèn)題，這篇文章詳細(xì)介紹了相對(duì)應(yīng)的分析和解答，希望可以幫助更多想解決這個(gè)問(wèn)題的小伙伴找到更簡(jiǎn)單易行的方法。

<div class="sign-con w1200">
			<img src="img/logn-tu.gif" class="sign-contu f-l"/>
			<form action="login.php" method="post">
				<div class="sign-ipt f-l">
					<p>用戶(hù)名：</p>
					<input type="text" name="username" placeholder="手機(jī)號(hào)/郵箱" />
					<p>密碼：</p>
					<input type="password" name="password" placeholder="密碼可見(jiàn)" />
					<br />
					<button class="slig-btn">登錄</button>
					<p>
						沒(méi)有賬號(hào)？請(qǐng)
						<a href="regist.html" rel="external nofollow" >注冊(cè)</a>
						<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="wj">忘記密碼？</a>
					</p>
					<div class="sign-qx">
						<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="f-r">
							<img src="img/sign-xinlan.gif" />
						</a>
						<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="qq f-r">
							<img src="img/sign-qq.gif" />
						</a>
						<div ></div>
					</div>
				</div>
			</form>
			<div ></div>
		</div>

5.注冊(cè)頁(yè)面的form表單代碼

<div class="password-con registered">
			<form action="regist.php" method="post">
				<div class="psw">
					<p class="psw-p1">用戶(hù)名</p>
					<input type="text" name="username" placeholder="HR了" />
					<span class="dui"></span>
				</div>
				<div class="psw">
					<p class="psw-p1">輸入密碼</p>
					<input type="password" name="password" placeholder="請(qǐng)輸入密碼" />
					<span class="cuo">密碼由6-16的字母、數(shù)字、符號(hào)組成</span>
				</div>
				<div class="psw">
					<p class="psw-p1">確認(rèn)密碼</p>
					<input type="password" name="repassword" placeholder="請(qǐng)?jiān)俅屋斎朊艽a" />
					<span class="cuo">密碼不一致，請(qǐng)重新輸入</span>
				</div>
				<div class="psw psw2">
					<p class="psw-p1">手機(jī)號(hào)/郵箱</p>
					<input type="text" name="telphone" placeholder="請(qǐng)輸入手機(jī)/郵箱驗(yàn)證碼" />
					<button>獲取短信驗(yàn)證碼</button>
				</div>
				<div class="psw psw3">
					<p class="psw-p1">驗(yàn)證碼</p>
					<input type="text" placeholder="請(qǐng)輸入驗(yàn)證碼" />
				</div>
				<div class="yanzhentu">
					<div class="yz-tu f-l">
						<img src="img/psw-yanzhengtu.gif" />
					</div>
					<p class="f-l">
						看不清楚？
						<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >換張圖</a>
					</p>
					<div ></div>
				</div>
				<div class="agreement">
					<input type="checkbox" name="hobby" />
					<p>
						我有閱讀并同意
						<span>《宅客微購(gòu)網(wǎng)站服務(wù)協(xié)議》</span>
					</p>
				</div>
				<button type="submit" value="注冊(cè)" class="psw-btn">立即注冊(cè)</button>
				<p class="sign-in">
					已有賬號(hào)？請(qǐng)
					<a href="login.html" rel="external nofollow" >登錄</a>
				</p>
			</form>
		</div><!-- 注冊(cè)框結(jié)束 -->

6.login.php代碼

<?php
  header("Content-type: text/html; charset=utf-8");
  $username = $_POST['username'];
  $password = $_POST['password'];
  $conn = new mysqli('localhost','root','root','shopping');
  if ($conn->connect_error){
    echo '數(shù)據(jù)庫(kù)連接失敗！';
    exit(0);
  }else{
    if ($username == ''){
      echo '<script>alert("請(qǐng)輸入用戶(hù)名！");history.go(-1);</script>';
      exit(0);
    }
    if ($password == ''){
      echo '<script>alert("請(qǐng)輸入密碼！");history.go(-1);</script>';
      exit(0);
    }
    $sql = "select username,password from userinfo where username = '$_POST[username]' and password = '$_POST[password]'";
    $result = $conn->query($sql);
    $number = mysqli_num_rows($result);
    if ($number) {
      echo '<script>window.location="index.html";</script>';
    } else {
      echo '<script>alert("用戶(hù)名或密碼錯(cuò)誤！");history.go(-1);</script>';
    }
  }
?>

7.regist.php代碼

<?php
  header("Content-type: text/html; charset=utf-8");
    $username = $_POST['username'];
    $password = $_POST['password'];
    $repassword = $_POST['repassword'];
    $telphone = $_POST['telphone'];
    if ($username == ''){
      echo '<script>alert("請(qǐng)輸入用戶(hù)名！");history.go(-1);</script>';
      exit(0);
    }
    if ($password == ''){
      echo '<script>alert("請(qǐng)輸入密碼");history.go(-1);</script>';
      exit(0);
    }
    if ($password != $repassword){
      echo '<script>alert("密碼與確認(rèn)密碼應(yīng)該一致");history.go(-1);</script>';
      exit(0);
    }
    if($password == $repassword){
      $conn = new mysqli('localhost','root','root','shopping');
      if ($conn->connect_error){
        echo '數(shù)據(jù)庫(kù)連接失??！';
        exit(0);
      }else {
        $sql = "select username from userinfo where username = '$_POST[username]'";
        $result = $conn->query($sql);
        $number = mysqli_num_rows($result);
        if ($number) {
          echo '<script>alert("用戶(hù)名已經(jīng)存在");history.go(-1);</script>';
        } else {
          $sql_insert = "insert into userinfo (username,password,telphone) values('$_POST[username]','$_POST[password]','$_POST[telphone]')";
          $res_insert = $conn->query($sql_insert);
          if ($res_insert) {
            echo '<script>window.location="index.html";</script>';
          } else {
            echo "<script>alert('系統(tǒng)繁忙，請(qǐng)稍候！');</script>";
          }
        }
      }
    }else{
      echo "<script>alert('提交未成功！'); history.go(-1);</script>";
    }
?>

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