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Asked: 2026-06-17T20:10:51+00:00

This code works 100% but when I try to use JSON it does not

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This code works 100% but when I try to use JSON it does not display any data.

The problem is that I am trying to change all my codes to PDO since I was told that mysql_* function’s are depreciated. 

<?php
$con = new PDO('mysql:host=localhost;dbname=adnan;charset=UTF-8','root','');
$sql= $con->query('select *  from adnan_user');
while($row =$sql->fetch()){
    echo $row['user_id'],"\n";
}
?>

Here is the code which I call in json : its also works when I use mysql_ function
But with pdo it does not work .

<?php 
$con = new PDO('mysql:host=localhost;dbname=adnan;charset=UTF-8','root','');
$sql= $con->query('select *  from adnan_user');
while($row =$sql->fetch()){
    $name = $row['name'];
    $user= $row['user']; 
}
// The JSON standard MIME header.
header('Content-type: application/json');
$array = array('name'=>$name, 'user'=>$user);
echo  json_encode($array);
?>

The code for json 

<html>
    <head>
        <script src="http://code.jquery.com/jquery-latest.js"></script>
        <script> 
        $(document).ready(function(){
            $.getJSON('json.php', function(data) {
                $('#myJson').html('<table style="color:red"><tr><td>' + data.name + '</td><td>' + data.user + '</td></tr></table>');
            });
        });
        </script>
    </head>
    <body>
        <div id="myJson"></div>
    </body>
</html>
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1 Answer

  1. Editorial Team

    Your DSN in new PDO(...) is wrong, because in MySQL the UTF-8 charset is called utf8:

    $con = new PDO('mysql:host=localhost;dbname=adnan;charset=utf8','root','');

    See here for more information: http://php.net/manual/en/mysqlinfo.concepts.charset.php

    Also you should catch exceptions, so PDO can tell you what’s wrong next time:

    try {
    $con = new PDO(...);
} catch (PDOException $e) {
    echo 'Connection failed: ' . $e->getMessage();
}
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