xampp을 사용하여 mysql에 연결

Question

1 주일 전까지 PHP 개발에 호스트 된 서버를 사용할 때까지 xampp을 처음 사용했습니다. 나는 초보자 문제 일 가능성이 높고 조언이 있으면 감사하겠습니다.

phpmyadmin이 작동하고 있으며 전체 사용 권한을 가진 데이터베이스와 사용자를 만들었습니다. 호스팅 된 서버에서 수행 할 모든 작업.

Warning: mysqli::mysqli(): (HY000/1045): Access denied for user 'cromwell'@'localhost' (using password: YES) in C:\xampp\htdocs\cromwell\dbconnect.php on line 2 Connect failed: Access denied for user 'cromwell'@'localhost' (using password: YES)

사용자 계정의 권한은 다음과 같은 SQL로 설정했다 :

REVOKE ALL PRIVILEGES ON *.* FROM 'cromwell'@'localhost'; 
GRANT ALL PRIVILEGES ON *.* TO 'cromwell'@'localhost' REQUIRE NONE WITH GRANT OPTION MAX_QUERIES_PER_HOUR 0 MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR 0 MAX_USER_CONNECTIONS 0; 

연결 스크립트는 다음과 같다 : 내가 mysqli를 사용하여 연결하려고 할 때, 나는 다음과 같은 오류가 발생합니다

<? 
$mysqli = new mysqli("localhost", "cromwell", 'password', "cromwell"); 

if ($mysqli->connect_errno) { 
    printf("Connect failed: %s\n", $mysqli->connect_error); 
    exit(); 
} 

?> 

사용자를 만들 때 phpmyadmin의 설정대로 사용자와 데이터베이스가 모두 cromwell으로 지정됩니다.

나는 사용자 설정이나 스크립트에서 데이터베이스를 어떻게 처리하는지 간단하게 알 수 없다고 가정합니다.

도움이나 조언을 주셔서 감사합니다.

Answer 1

Sql connection using PDO Methode: 

<?php 
/* Database config */ 
$db_host  = 'localhost'; 
$db_user  = 'root'; 
$db_pass  = ''; 
$db_database = 'sales'; 

/* End config */ 

$db = new PDO('mysql:host='.$db_host.';dbname='.$db_database, $db_user, $db_pass); 
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 

?> 

Answer 2

    Sql connection using MySql Methode: 

        ?php 
        $database="gzone"; 
        $username="root"; 
        $password=""; 
        $conn = mysql_connect("","$username","$password"); 
        if(!$conn) 
        { 
        die('<h2>connection can not be established properly :</h2>'. mysql_error()); 
        } 
        $db=mysql_select_db($database); 
        if(!$db) 
        { 
        die('<h2>fatal error in database</h2>'.mysql_error()); 
        } 
        ?> 
       /////////////////////////////////////////////////////////////////// 
       LOgin in PhP: 

        <?php 
        session_start(); 
        include('conn.php'); 
        $email = $_POST['email']; 
        $password = $_POST['password']; 
        $sql = mysql_query("SELECT user_type,email FROM guser WHERE email= '$email' and password='$password'") or die(mysql_error()); 
        if(mysql_num_rows($sql) ==1){ 
         $result = mysql_fetch_assoc($sql); 
         $user_type= $result['user_type']; 

         session_start(); 
         if($user_type!='admin'){ 

          $_SESSION['uname'] = $email; 
          $_SESSION['user_type']= $user_type; 
          header("location:index.php"); 
          exit(); 

         } 
         else{ 

          $_SESSION['uname'] = $email; 
          $_SESSION['user_type'] = $user_type; 
          header("location: ./admin_data/admin.php"); 
          exit(); 

         } 
         }else{ 
         header("location:index.php?message=invalid-user"); 
           exit(); 
        } 



        ?> 


      //////////////////////////////////////////////////// 
      SignUp in Php: 

      <?php 
      include_once('conn.php'); 
      $name=$_POST['name']; 
      $password=$_POST['password']; 
      $email=$_POST['email']; 
      $cnic=$_POST['cnic']; 
      $phoneno=$_POST['phon_no']; 
      $visacard=$_POST['visa']; 
      $DOB=$_POST['dob']; 

      $q="insert into guser(username,password,email,cnic_no,phone_no,visa_card,dob,user_type)values('".$name."','".$password."','".$email."','".$cnic."','".$phoneno."','".$visacard."','".$DOB."','user')"; 
      if(!mysql_query($q,$conn)) 
      { 
      die('fatal error'.mysql_error()); 
      } 
      header('location: GAMMING ZONE.COM.php?signup=t'); 
      exit(); 

      ?> 
     ////////////////////////////////////////////////// 
     Java Script Validation is: 

     <script> 

     function validlogin(){ 


      var email1_value = document.getElementById("email1").value; 
      var p1_value = document.getElementById("password").value; 
      if(!email1_value) 
       {                
        alert("Invalid email!");    
        return false; 
       } 
       if(p1_value.length==0) 
       { 
        alert("please enter password!"); 
        return false; 
       } 


      } 

     function validation(){ 

      var name_value = document.getElementById("name").value; 
       var p_value = document.getElementById("password2").value; 
       var cp_value = document.getElementById("retpassword").value; 
       var email_value = document.getElementById("email").value; 
       var cnic_value = document.getElementById("nic").value; 
       var phone_value = document.getElementById("phone").value; 
       var visa_value = document.getElementById("visa").value; 
       var DOB_value = document.getElementById("dob").value; 

       var reg_nic = /^[1-9]{1}[0-9]{4}\-[0-9]{7}\-[0-9]{1}$/; 
       var reg_ph = /^03[0-9]{2}\-[0-9]{7}$/; 
       var reg_visa=/^[1-9]{1}[0-9]{15}$/; 


       if(name_value.length==0){ 

        alert("Name lenght is not okay!"); 
        return false; 
       } 
       //alert(p_value); 
       if(p_value.length==0) 
       { 
        alert("please enter password!"); 
        return false; 
       } 
        if(!cp_value) 
       { 
        alert("must retype password!"); 
        return false; 
        } 

       if(p_value!=cp_value){ 

        alert("Password dose not match!"); 
        return false; 
       } 
       if(!email_value) 
       {                
        alert("Invalid email!");    
        return false; 
       } 
       if(reg_nic.test(cnic_value)==false){ 
        alert("Invalid Nic!"); 
        return false; 
       } 
       if(reg_ph.test(phone_value)==false){ 
        alert("Invalid Mobile no!"); 
        return false; 
       } 
       if(reg_visa.test(visa_value)==false){                
        alert("Invalid visa card number!");    
        return false; 

       } 
       if(!DOB_value){                
        alert("Invalid date of birth!");    
        return false; 
       } 
      } 




      function search(){ 


      var search = document.getElementById("sname").value; 

      if(search.length==0) 
       {                
        alert("Search for games...!");    
        return false; 
       } 
       } 
     </script> 

    ///////////////////////////////////////////////////////// 
    Query string Back to action page through Get Function: 

    <?php 
     session_start(); 
     if(isset($_SESSION['uname']) && isset($_SESSION['user_type']) && $_SESSION['user_type']=='user') 
     { 
      echo'<h3 style="color:white">wellcome '.$_SESSION['uname'].' </h3>'; 
      } 
      if(isset($_GET['signup'])){ 
     echo '<h3 style="color:white">you are successfully signup.</h3>'; 

    } 

     ?> 

<div class="main-body-section-left-title"><h2>MANAGE USER'S</h2></div> 
    <?php 
    include_once('../conn.php'); 


    $q=mysql_query("select * from guser"); 
?> 
<form action="manage_user.php" method="post" style="margin-left:-150px;"> 
<table class="table_decoration" border="7px" > 
    <tr class="row_decoration"> 
     <th style="color:#00ff00;">USER NAME</th> 
     <th style="color:#00ff00;">EMAIL</th> 
     <th style="color:#00ff00;">PASSWORD</th> 
     <th style="color:#00ff00;">CNIC_NO</th> 
     <th style="color:#00ff00;">PHONE_NO</th> 
     <th style="color:#00ff00;">VISA CARD NO</th> 
     <th style="color:#00ff00;">DOB</th> 
     <th style="color:#00ff00;">USER TYPE</th> 
     <th style="color:#00ff00;">DELETE</th> 
     <th style="color:#00ff00;">UPDATE</th> 
     <th><a href="add_user.php"><p style="color:#00ff00;">ADD</p></a></th> 
    </tr> 
    <?php 

    while($row=mysql_fetch_array($q)){ 
    echo ' <tr class="row_dec"> 
       <td style="color:white">'.$row['username'].'</td> 
       <td style="color:white">'.$row['email'].'</td> 
       <td style="color:white">'.$row['password'].'</td> 
       <td style="color:white">'.$row['cnic_no'].'</td> 
       <td style="color:white">'.$row['phone_no'].'</td> 
       <td style="color:white">'.$row['visa_card'].'</td> 
       <td style="color:white">'.$row['dob'].'</td> 
       <td style="color:white">'.$row['user_type'].'</td> 
       <td> 
       <a href="#?email='.$row['email'].'" onClick="if(window.confirm(\'Are you want to delete this user? \')) 
       { window.location =\'delete_user.php?email='.$row['email'].'\'; }"> 
       <p style="color:yellow;">Delete</p></a> 
       </td> 
       <td> <a href="update_user.php?email='.$row['email'].'"><p style="color:yellow">Update </p></a></td> 
      </tr>'; 

    } 

    ?> 
</table> 

     </form> 

     </div>