<?<span>php </span><span>$con</span> = <span>mysql_connect</span>("localhost:3306","root",""<span>); </span><span>if</span> (!<span>$con</span><span>) { </span><span>die</span>('Could not connect: ' . <span>mysql_error</span><span>()); } </span><span>mysql_select_db</span>("test", <span>$con</span><span>); </span><span>$result</span> = <span>mysql_query</span>("SELECT * FROM user"<span>); </span><span>echo</span> "<span><table border='1'> <tr> <th>Username</th> <th>Password</th> </tr>"<span>; </span><span>while</span>(<span>$row</span> = <span>mysql_fetch_array</span>(<span>$result</span><span>)) { </span><span>echo</span> "<tr>"<span>; </span><span>echo</span> "<td>" . <span>$row</span>['username'] . "</td>"<span>; </span><span>echo</span> "<td>" . <span>$row</span>['password'] . "</td>"<span>; </span><span>echo</span> "</tr>"<span>; } </span><span>echo</span> "</table>"<span>; </span><span>mysql_close</span>(<span>$con</span><span>); </span>?>
<?<span>php </span><span>$con</span> = <span>mysql_connect</span>("localhost","root",""<span>); </span><span>if</span> (!<span>$con</span><span>) { </span><span>die</span>('Could not connect: ' . <span>mysql_error</span><span>()); } </span><span>mysql_select_db</span>("test", <span>$con</span><span>); </span><span>mysql_query</span>("DELETE FROM user WHERE username = '<span>$_POST</span>[username]'"<span>); </span><span>mysql_close</span>(<span>$con</span><span>); </span>?>
<?<span>php </span><span>$con</span> = <span>mysql_connect</span>("localhost:3306","root",""<span>); </span><span>if</span> (!<span>$con</span><span>) { </span><span>die</span>('Could not connect: ' . <span>mysql_error</span><span>()); } </span><span>mysql_select_db</span>("test", <span>$con</span><span>); </span><span>$sql</span> = "<span>INSERT INTO user (username,password) VALUES ('</span><span>$_POST</span>[username]','<span>$_POST</span>[password]')"<span>; </span><span>if</span> (!<span>mysql_query</span>(<span>$sql</span>,<span>$con</span><span>)) { </span><span>die</span>('Error: ' . <span>mysql_error</span><span>()); } </span><span>echo</span> "1 record added"<span>; </span><span>mysql_close</span>(<span>$con</span><span>); </span>?>
<?<span>php </span><span>$con</span> = <span>mysql_connect</span>("localhost","root",""<span>); </span><span>if</span> (!<span>$con</span><span>) { </span><span>die</span>('Could not connect: ' . <span>mysql_error</span><span>()); } </span><span>mysql_select_db</span>("test", <span>$con</span><span>); </span><span>mysql_query</span>("UPDATE user SET password = '<span>$_POST</span>[password]' WHERE username = '<span>$_POST</span>[username]'"<span>); </span><span>mysql_close</span>(<span>$con</span><span>); </span>?>
<html> <head> <title>用PHP向数据库中实现简单的增删改查</title> </head> <body> <br /> <h1>Insert:</h1> <form action="insert.php" method="post"><span> username</span>:<input type="name" name="username"/> <br /><span> password</span>:<input type="password" name="password"/> <input type="submit" value="submit"/> </form> <br /><hr /><br /> <h1>Delete</h1> <form action="delete.php" method="post"><span> username</span>:<input type="name" name="username" /> <br /><span> Are you sure</span>?<input type="submit" value="sure" /> </form> <br /><hr /><br /> <h1>Update</h1> <form action="update.php" method="post"><span> username</span>:<input type="name" name="username"/> <br /><span> You want to change your password into</span>:<input type="password" name="password"/> <input type="submit" value="submit"/> </form> <br /><hr /><br /> </body> </html>
위 내용은 PHP를 사용하여 데이터베이스(순수 코드, 개선 예정)에서 간단한 추가, 삭제, 수정 및 검색을 구현하는 방법을 소개하며, 관련 측면도 포함하여 PHP 튜토리얼에 관심이 있는 친구들에게 도움이 되기를 바랍니다.