php+mysql实现简单的增删改查功能_php技巧

<?php
  $con = mysql_connect("localhost:3306","root","");

  if (!$con) {
    die('Could not connect: ' . mysql_error());
  }

  mysql_select_db("test", $con);

  $result = mysql_query("SELECT * FROM user");

  echo "";

  while($row = mysql_fetch_array($result)) {
    echo "";
    echo "";
    echo "";
    echo "";
  }
  echo "

  

  
Username
  
Password
  
" . $row['username'] . "
" . $row['password'] . "
";

  mysql_close($con);

?>

删除

<?php
  $con = mysql_connect("localhost","root","");
  if (!$con) {
    die('Could not connect: ' . mysql_error());
  }

  mysql_select_db("test", $con);

  mysql_query("DELETE FROM user WHERE username = '$_POST[username]'");

  mysql_close($con);
?>

添加

<?php
  $con = mysql_connect("localhost:3306","root","");

  if (!$con) {
    die('Could not connect: ' . mysql_error());
  }

  mysql_select_db("test", $con);

  $sql = "INSERT INTO user (username,password)
  VALUES
  ('$_POST[username]','$_POST[password]')";

  if (!mysql_query($sql,$con)) {
    die('Error: ' . mysql_error());
  }

  echo "1 record added";

  mysql_close($con);

?>

修改

<?php

  $con = mysql_connect("localhost","root","");
  if (!$con) {
    die('Could not connect: ' . mysql_error());
  }

  mysql_select_db("test", $con);

  mysql_query("UPDATE user SET password = '$_POST[password]' WHERE username = '$_POST[username]'");

  mysql_close($con);
?>

  
    
  
  
    

    
Insert:
    
    


    
Delete
    
    


    
Update
    
    


  

以上所述就是本文的全部内容了，希望大家能够喜欢。