PHP MySql增刪改查的簡單實例

mysql_connect()連接數據庫

mysql_select_db選擇數據庫

mysql_fetch_assoc()獲取結果集

mysql_query()執行sql語句

實例如下：

<?php
  $con=@mysql_connect('localhost','root','root');//連接數據庫
  mysql_select_db('test',$con);//選擇數據庫
  $userInfo=mysql_query("select * from user",$con);//創建sql語句
  echo "<table>";
  while($row=mysql_fetch_assoc($userInfo))//獲取結果集每一行的數據
  {
    echo "<tr>";
    echo "<td>";
    echo $row['id'];//獲取行中的id
    echo "</td>";
    echo "<td>";
    echo $row['username'];
    echo "</td>";
    echo "<td>";
    echo $row['password'];
    echo "</td>";
    echo "</tr>";
  }
  echo "</table>";
  mysql_free_result($userInfo);//釋放結果集
  mysql_close($con); //關閉數據庫
  /*delete
  $d=@mysql_connect('localhost','root','root');
  mysql_select_db('test',$d);
  mysql_query("delete from user where id=1",$d);
  mysql_close($d);
  */
  /*insert
  $i=@mysql_connect('localhost','root','root');
  mysql_select_db('test',$i);
  mysql_query("insert into user(username,password) values('ad','ad')",$i);
  mysql_close($i);
  */
  //update
  $u=@mysql_connect('localhost','root','root');
  mysql_select_db('test',$u);
  mysql_query("update user set username='aaa' where username='00'",$u);
  echo "update user set username='ax' where id=2";
  mysql_close($u);
?>

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