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PHP與SQL語法存取MySQL SQL http://www.w3schools.com/sql/default.asp.

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Presentation on theme: "PHP與SQL語法存取MySQL SQL http://www.w3schools.com/sql/default.asp."— Presentation transcript:

1 PHP與SQL語法存取MySQL SQL

2 1. 新增 INSERT INTO

3 2. 修改 UPDATE

4 修改實例:網頁表單 複製AP03之insert.html,更名為input.html,加入以下藍紫色字體部分,上傳
<!DOCTYPE html> <html> <body> <form action="insert.php" method="post"> 帳號: <input type="text" name="user"><br> 密碼: <input type="password" name="pwd"><br> 最高分: <input type="number" name="best" min="0" max="100"><br> <input type="submit" value="新增資料"> </form> <hr> <form action="update.php" method="post"> <input type="submit" value="修改資料"> </body> </html>

5 修改實例:PHP 複製AP03之insert.php,更名為update.php,根據以下修改,上傳 <?php
header("Content-Type:text/html; charset=utf-8"); $con = mysqli_connect("db4free.net","pucsim"," ","mismis"); // Check connection if (mysqli_connect_errno()) { echo "無法連線到MySQL: " . mysqli_connect_error(); } $user = $_POST['user']; $pwd = $_POST['pwd']; $best = $_POST['best']; // Perform queries $sql="UPDATE Member SET UserBest = $best WHERE UserName = '$user' AND UserPass = SHA1('$pwd')"; if (mysqli_query($con,$sql)){ echo "您的資料修改成功"; else { echo "您的資料修改失敗"; mysqli_close($con); ?>

6 執行結果 輸入資料庫使用者及密碼

7 3. 刪除 DELETE

8 刪除實例:網頁表單 修改input.html,加入以下部分,上傳 <hr>
<form action="delete.php" method="post"> 帳號: <input type="text" name="user"><br> 密碼: <input type="password" name="pwd"><br> <input type="submit" value="刪除資料"> </form>

9 刪除實例:PHP <?php header("Content-Type:text/html; charset=utf-8");
複製update.php,更名為delete.php,根據以下修改,上傳 <?php header("Content-Type:text/html; charset=utf-8"); $con = mysqli_connect("db4free.net","pucsim"," ","mismis"); // Check connection if (mysqli_connect_errno()) { echo "無法連線到MySQL: " . mysqli_connect_error(); } $user = $_POST['user']; $pwd = $_POST['pwd']; $best = $_POST['best']; // Perform queries $sql="DELETE FROM Member WHERE UserName = '$user' AND UserPass = SHA1('$pwd')"; if (mysqli_query($con,$sql)){ echo "您的資料刪除成功"; else { echo "您的資料刪除失敗"; mysqli_close($con); ?>

10 執行結果

11 4. 查詢 SELECT

12 查詢 SELECT WHERE 條件

13 查詢實例:網頁表單 修改input.html,加入以下部分,上傳 <hr>
<form action="select1.php" method="post"> 帳號: <input type="text" name="user"><br> 密碼: <input type="password" name="pwd"><br> <input type="submit" value="查詢該使用者最高分"> </form>

14 查詢實例:PHP 複製delete.php,更名為select1.php,根據以下修改,上傳 <?php header("Content-Type:text/html; charset=utf-8"); $con = mysqli_connect("db4free.net","pucsim"," ","mismis"); // Check connection if (mysqli_connect_errno()) { echo "無法連線到MySQL: " . mysqli_connect_error(); } $user = $_POST['user']; $pwd = $_POST['pwd']; $best = $_POST['best']; // Perform queries $sql="SELECT UserBest FROM Member where UserName = '$user' AND UserPass = SHA1('$pwd')"; $row = mysqli_fetch_array(mysqli_query($con,$sql)); $data = $row[0]; if($data){ echo "您的最高分為:" . $data; else{ echo "您的帳號或密碼有誤"; mysqli_close($con); ?>

15 5. 查詢及顯示多筆資料實例 假設要以JSON格式呈現

16 JSON格式 物件(object)用大括號 { } 陣列(array)用中括號 [ ]

17 JSON Example 1 [ {"學校":"靜宜大學", "地址":"台中市沙鹿區台灣大道七段200號"},
{"學校":"東海大學", "地址":"台中市西屯區台灣大道四段1727號"}, {"學校":"逢甲大學", "地址":"台中市西屯區文華路100號"} ]

18 JSON Example 2 { "employees":[ {"firstName":"John", "lastName":"Doe"},
{"firstName":"Anna", "lastName":"Smith"}, {"firstName":"Peter", "lastName":"Jones"} ] }

19 使用Online JSON Viewer觀看
Text頁籤,貼上文字,或是選擇Load JSON data按鈕,輸入JSON檔案的網址 政府資料開放平台 例如:「國家森林遊樂區」 JSON資料:

20 查詢多筆資料實例:網頁表單 修改input.html,加入以下部分,上傳 <hr>
<form action="select2.php" method="post"> <input type="submit" value="查詢全部資料"> </form>

21 查詢多筆資料實例:PHP 複製select1.php,更名為select2.php,根據以下修改,上傳 <?php
header("Content-Type:text/html; charset=utf-8"); $con = mysqli_connect("db4free.net","pucsim"," ","mismis"); // Check connection if (mysqli_connect_errno()) { echo "無法連線到MySQL: " . mysqli_connect_error(); } // Perform queries mysqli_query($con,"SET CHARACTER SET UTF8"); $sql="SELECT * FROM Member"; $result = mysqli_query($con,$sql); $json = array(); if(mysqli_num_rows($result)){ while($row=mysqli_fetch_assoc($result)){ $json[]=$row; echo urldecode(json_encode($json)); mysqli_close($con); ?>

22 執行結果(以JSON格式顯示)


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