本文使用的軟件版本如下：PHP版本 5.5.12；MYSQL版本 5.6.17；Apache 2.4.9 用的wampserver
一、PHPMYSQL實(shí)現(xiàn)登陸
一共含有兩個(gè)文件：login.php和logincheck.php;
表單代碼：
<form action="logincheck.php"method="post"> Yonghu:<inputtype="text" name="username" /> <br /> Mima:<input type="password" name="password" /> <br /> <input type="submit" name="submit" value="登陸" ahref="logincheck.php" /> <a href="register.php">zhuce:</a></form>
后臺(tái)處理代碼：
<?php if(isset($_POST["submit"])&& $_POST["submit"] == "登陸") { $user= $_POST["username"]; $psw= $_POST["password"]; if($user== "" || $psw == "") { echo"<script>alert('請(qǐng)輸入用戶名或密碼！'); history.go(-1);</script>"; } else { $link= mysqli_connect('localhost', 'sa', '123456','account');//鏈接數(shù)據(jù)庫(kù) mysqli_select_db($link,"account"); mysqli_query($link,'setname utf8'); $sql= "selectuser from zhanghu where user = '$_POST[username]'"; $result=mysqli_query($link,$sql)or die("Failed".mysql_error()); if($num=mysqli_num_rows($result)) { $row= mysqli_fetch_array($result); //將數(shù)據(jù)以索引方式儲(chǔ)存在數(shù)組中 echo"welcome "; echo$row[0]; } else { echo"<script>alert('用戶名或密碼不正確！');history.go(-1);</script>"; } } } else { echo"<script>alert('Submit Failed!');history.go(-1);</script>"; } ?> Account數(shù)據(jù)庫(kù)內(nèi)容：
二、PHPMYSQL實(shí)現(xiàn)模糊查詢
查詢數(shù)據(jù)庫(kù)（只給PHP的代碼）：
<?php $mysqli=newmysqli(); $mysqli->connect("localhost","sa", "123456"); if(mysqli_connect_errno()) { printf("Failllllll:%s/n", mysqli_connect_error()); exit(); } $mysqli->select_db("booklib"); $mysqli->query("SETNAMES utf8"); $rsbooks= $mysqli->query("select * from books where Name like'%$_POST[bookname]%'"); $row_rsbooks = $rsbooks->fetch_assoc(); $totalRows_rsbooks = $rsbooks->num_rows; ?> Totel<?php echo $totalRows_rsbooks ?>books;<table width="600"border="1"> <tr> <td bgcolor="#99CCFF"align="center">Name</td> <td bgcolor="#99CCFF" align="center">ISBN</td> <td bgcolor="#99CCFF"align="center">Store</td> <td bgcolor="#99CCFF"align="center">Do</td> </tr> <?php do { ?> <tr> <td><?php echo $row_rsbooks['Name']; ?></td> <td><?php echo $row_rsbooks['ISBN']; ?></td> <td><?php echo $row_rsbooks['Store']; ?></td> <td><fontcolor="#110BAA">rent</font></td> </tr> <?php } while ($row_rsbooks = $rsbooks->fetch_assoc()); ?></table><?php $rsbooks->close(); $mysqli->close();?> 數(shù)據(jù)庫(kù)表的內(nèi)容如下：
查詢：
結(jié)果：
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家學(xué)習(xí)php程序設(shè)計(jì)有所幫助。
