PHP操作Mysql數據庫查詢數據實例

需求

1. PHP連接數據庫
2. 查詢遍歷所有數據

PHP連接數據庫

//config.php文件內容
$database = "xx";
$dataname = "root";
$datapasswd = "xxx";
$datalocal = "localhost:3306";
//$dataport = "3306";
$con = mysqli_connect($datalocal,$dataname,$datapasswd,$database);
if(!$con){
    echo "數據庫連接異常";
}
//設置查詢數據庫編碼
mysqli_query($con,'set names utf8');

查詢遍歷所有數據

<?php
//連接數據庫
include './inc/config.php';
//查詢數據庫
$query = 'select * from user';
$result1 = mysqli_query($con,$query);


//函數返回結果集中行的數量
if(mysqli_num_rows($result1)>0){
//mysqli_fetch_array以數組的形式返回，關聯數組
while($row = mysqli_fetch_array($result1)){
       
    echo     
 "<center>
<table>
 <tr>
   <th>賬號</th>
   <th>密碼</th>
 </tr>
 <tr>
    <td>".$row['id']."</td>
   <td>".$row['name']."</td>
   <td>".$row['password']. "</td>
 </tr>
</table>
</center>";
 }      
}
//關閉數據庫
 mysqli_close($con);
 ?>