为什么服务器拒绝我的PDO查询？

Question

I've been trying to write a simple search and display site with a drop down menu, I've tried using mysqli and PDO and I'm not getting the results. I've just checked the server log in cpanel and found that the access has been denied to the results page. The access must be all right for the drop down page as it is populating the drop down list. I can't see why it is being stopped. The server is running PHP 5.3.27 and MYSQL 5.5.36.

This is the drop down.

 <form action="search3.php" method="post" >

<?php

    $mysqli = new mysqli('localhost','user','password','engraved_stamps');
    if ($mysqli->connect_error) {
    die('Error : ('. $mysqli->connect_errno .') '. $mysqli->connect_error);
    }

    $query = "SELECT DISTINCT Country FROM engravers ORDER BY Country";
    $result = $mysqli->query($query);

    ?>
    <select >
    <?php

       while ($row = $result->fetch_assoc()) {
         echo "<option value=\"{$row['Country']}\">";
         echo $row['Country'];
         echo "</option>";
    }
    $mysqli->close();
    ?>
      </select>

              <input type="submit" name="dropdown" />   
              </form>

This is the results page (action for restul) (called Search3.php)

    <?php

    $hostname = "localhost";
    $user = "user";
    $password = "password";
    $connection = mysqli_connect($hostname, $user, $password,);
    if(!$connection){
    echo"Could not connect to server";
    };
    mysqli_select_db($connection,'engraved_stamps');
    if(!mysqli_select_db($connection,'engraved_stamps')){
    echo"could not connect to database";
    };

    if(isset($_POST['dropdown'])){
    $Country = $_POST['dropdown'];
    }else{
    $Country = "none";
    }
    $sql= "SELECT * FROM engravers WHERE Country = :Country";
    $stmt = $pdo->prepare($sql);
    $stmt->bindParam(':Country', $Country, PDO::PARAM_STR);
    $stmt->execute();
    $total = $stmt->rowCount();

    while ($row = $stmt->fetchObject()) {
    echo $row->Country;
    }

    $mysqli->close();

        ?>

Answer 1

I think PDO and mysqli are different PHP extensions. You should choose only one thing to deal with your work.

eg, you can use mysqli only, or PDO.

For more information about PDO, see: http://php.net/manual/en/pdo.construct.php

Answer 2

You are mixing two entirely different database extensions:

1. MySQL Improved Extension (aka mysqli ):

    $mysqli = new mysqli(...) ^^^^^^ 

2. PHP Data Objects (aka PDO ):

    $stmt->bindParam(':Country', $Country, PDO::PARAM_STR); ^^^ 

Despite your question title and tags, your code seems to use mysqli entirely. You'll just need to get rid of the PDO bits.

You're also using some undefined variables:

$stmt = $pdo->prepare($sql);
        ^^^^

You're apparently not getting the corresponding error messages, which suggests you haven't configured your PHP development box to do so. As soon as you do it, you'll be possibly warned of some other issues.

Answer 3

<?php
try {
    //here add user and password and database please be sure u have used correct one
$dbh = new PDO("mysql:host=localhost;dbname=engraved_stamps",'root','');
    }
catch(PDOException $e)
    {
    echo $e->getMessage();
    }
?>

<?php

$STM = $dbh->prepare("SELECT * FROM engravers WHERE Country = :Country");
 if(isset($_POST['dropdown'])){
    $Country = $_POST['dropdown'];
    }else{
    $Country = "name";//here you can assing % too for value of any if u need tell me to recode, NOTE here now the value u have assign is (name) is the record value on ur engravers table for column of Country.
    }


$STM->bindParam(':Country', $Country, PDO::PARAM_STR);
$STM->execute();                    
$row= $STM->fetchAll();
 if(count($row)){
    foreach($row as $data){
        echo $data['Country'] . "<br />";// here country is the column of ur table u can echo other columns too
    }
 }else {
    echo 'no row found';
 }

?> 

Answer 4

Sorry abas_rafiq. the comments only allow a certain number of characters. Here is the structure: CREATE TABLE IF NOT EXISTS engravers ( Key int(10) NOT NULL AUTO_INCREMENT, StampImages text NOT NULL, Images text NOT NULL, Country text NOT NULL, Year int(4) NOT NULL, Description text NOT NULL, SGNumber text NOT NULL, ScottNumber text NOT NULL, Engraver1Surname text NOT NULL, Engraver1OtherNames text NOT NULL, Engraver2Surname text NOT NULL, Engraver2OtherNames text NOT NULL, Engraver3Surname text NOT NULL, Engraver3OtherNames text NOT NULL, Designer1Surname text NOT NULL, Designer1OtherNames text NOT NULL, Designer2Surname text NOT NULL, Designer2OtherNames text NOT NULL, Printer text NOT NULL, Notes text NOT NULL, PRIMARY KEY ( Key ), UNIQUE KEY Key ( Key ) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=91 ; They were not all "Not Null" when I set it up but I see they are now.