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Simple PHP and MySQL CRUD Application Example

This example demonstrates a basic CRUD (Create, Read, Update, Delete) application using PHP and MySQL. It includes scripts for inserting records, updating existing entries, deleting records, and searching by name. The user interface consists of forms for each operation and a table displaying current accounts. It utilizes PHP to connect to a MySQL database and perform SQL queries, providing a practical guide for beginners looking to understand database interactions in web applications.

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Simple PHP and MySQL CRUD Application Example

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  1. PHP and MySQL Chin-Yi Tsai cyt@pmlab.iecs.fcu.edu.tw http://140.134.26.25/~cyt

  2. Example • account.php • insert.php • update.php • delete.php • search.php insert into account values($new_id, '$name') update account set name = '$name' where id =$id delete from account where id =$id select * from account where name = '$name'

  3. <?php $link = mysql_connect("localhost", “root", “ "); $select = mysql_select_db("test_db", $link); $sql_select = "select * from account"; $result = mysql_query($sql_select); ?> <html> <title>PHP and Mysql Example</title> <body> <center> <table border =1> <tr> <td>編號 <td>姓名 <?php while($row = mysql_fetch_array($result)) { echo "<tr>"; echo "<td>" . $row[0]; echo "<td>" . $row[1]; } mysql_free_result($result); ?> account.php

  4. </table> <hr> <form action="insert.php" method="post"> 姓名<input type=text name=name size=20> <input type=submit value="新增"> </form> <hr> <form action="update.php" method="post"> 編號<input type=text name=id size=5> 姓名<input type=text name=name size=20> <input type=submit value="修改"> </form> <hr> <form action="delete.php" method="post"> 編號<input type=text name=id size=5> <input type=submit value="刪除"> </form> <hr> <form action="search.php" method="post"> 姓名<input type=text name=name size=20> <input type=submit value="搜尋"> </form> </center> </body> </html> account.php

  5. insert.php <?php $link = mysql_connect("localhost", "root", " "); $select = mysql_select_db("test_db", $link); $id = $_POST['id']; $name = $_POST['name']; $sql_update = "update account set name = '$name' where id =$id"; mysql_query($sql_update); header("Location: http://leo.pmlab.iecs.fcu.edu.tw/PHP_example/PHP_cyt/account.php"); ?>

  6. update.php <?php $link = mysql_connect("localhost", "root", " "); $select = mysql_select_db("test_db", $link); $id = $_POST['id']; $name = $_POST['name']; $sql_update = "update account set name = '$name' where id =$id"; mysql_query($sql_update); header("Location: http://127.0.0.1/account.php"); ?>

  7. delete.php <?php $link =mysql_connect("localhost", "root", " "); $select = mysql_select_db("test_db", $link); $id = $_POST['id']; $sql_delete = "delete from account where id =$id"; mysql_query($sql_delete); header("Location: http://127.0.0.1/account.php"); ?>

  8. search.php <?php $link = mysql_connect("localhost", "root", " "); $select = mysql_select_db("test_db", $link); $name = $_POST['name']; $sql_search = "select * from account where name = '$name'"; $result = mysql_query($sql_search); ?> <html> <body> <?php $row = mysql_fetch_array($result); echo "搜尋結果<br>"; echo "編號:".$row[0]."<br>"; echo "姓名:".$row[1]."<br>"; ?> <br> <a href="account.php">返回</a> </body> </html>

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