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POHow to migrate mysqli to pdo
 

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  1. POHow to migrate mysqli to pdo
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    <p>Hi I was wondering how I would migrate a mysqli php file to use PDO. Would anyone be able to take a look at my code and see if I'm on the right track?</p> <p>This is my original (mysqli) code:</p> <pre><code>&lt;?php // connecting to database $conn = new mysqli('xxxxxx', 'xxxxxx', 'password', 'xxxxxx'); $match_email = 'email'; $match_passhash = 'passhash'; if (isset($_POST['email'])) { $clean_email = mysqli_real_escape_string($conn, $_POST['email']); $match_email = $clean_email; } if (isset($_POST['passhash'])) { $clean_passhash = mysqli_real_escape_string($conn, $_POST['passhash']); $match_passhash = sha1($clean_passhash); } $userquery = "SELECT email, passhash, userlevel, confirmed, blocked FROM useraccounts WHERE email = '$match_email' AND passhash = '$match_passhash' AND userlevel='user' AND confirmed='true' AND blocked='false';"; $userresult = $conn-&gt;query($userquery); if ($userresult-&gt;num_rows == 1) { $_SESSION['authorisation'] = 'knownuser'; header("Location: userhome.php"); exit; } else { $_SESSION['authorisation'] = 'unknownuser'; header("Location: userlogin.php"); exit; } ?&gt; </code></pre> <p>And this is my attempt to migrate it to PDO:</p> <pre><code>&lt;?php // connecting to database $dbh = new PDO("mysql:host=xxxxxx; dbname=xxxxxx", "xxxxxx", "password"); $match_email = 'email'; $match_passhash = 'passhash'; if (isset($_POST['email'])) { $clean_email = mysqli_real_escape_string($conn, $_POST['email']); $match_email = $clean_email; } if (isset($_POST['passhash'])) { $clean_passhash = mysqli_real_escape_string($conn, $_POST['passhash']); $match_passhash = sha1($clean_passhash); } $userquery = "SELECT email, passhash, userlevel, confirmed, blocked FROM useraccounts WHERE email = ':match_email' AND passhash = ':match_passhash' AND userlevel='user' AND confirmed='true' AND blocked='false';"; $stmt = $dbh-&gt;prepare($query); $stmt-&gt;bindParam(":match_email", $match_email); $stmt-&gt;bindParam(":match_passhash", $match_passhash); $stmt-&gt;execute(); $userresult = $conn-&gt;query($userquery); if ($userresult-&gt;num_rows == 1) { $_SESSION['authorisation'] = 'knownuser'; header("Location: userhome.php"); exit; } else { $_SESSION['authorisation'] = 'unknownuser'; header("Location: userlogin.php"); exit; } ?&gt; </code></pre> <p>I'm also not sure how to count the number of rows returned in PDO.</p> <p>If anyone would be able to help me out that wold be very great.</p> <p>A million thanks in advance!</p>
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