php鏈接mysql，數據CRUD操做

插入數據

<?php
 $name = $_GET['username'];
 $sex = $_GET['sex'];
 $hobby = $_GET['hobby'];
 $address = $_GET['address'];
 $remark = $_GET['remark'];

 $conn = mysqli_connect("localhost","root","root","exercise");
 if ($conn){
 $sql = "INSERT INTO info(姓名,性別,愛好,家庭住址,備註) VALUES ('$name','$sex','$hobby','$address','$remark')";
 if (mysqli_query($conn,$sql) === true) {
 echo "新紀錄插入成功";
 } else {
 echo "新劇路插入失敗".mysqli_error($conn);
 }
 mysqli_close($conn);
 }else{
 die("鏈接數據庫失敗：" . mysqli_error());
 }
?>

遍歷表中全部數據

 $conn = mysqli_connect("localhost","root","root","exercise");
 if ($conn){ 
 $result=mysqli_query($conn,"select * from info");
 while($myrow=mysqli_fetch_row($result)) {
 echo "<tr><td>$myrow[0]</td><td>$myrow[1]</td><td>$myrow[2]</td><td>$myrow[3]</td>
 <td>$myrow[4]</td><td><a href='#'>修改</a>&nbsp<a href='#'>刪除</a></td></tr>";
 }
 mysqli_close($conn);
 }else{
 die("鏈接數據庫失敗：" . mysqli_error()); }