I have an ajax script, which I kinda understand, but still need some extra help.

```
$('.images').click(function(){
    var imageId = $(this).attr('id');
    alert(imageName);
    $.ajax({
            type: "get",
            url: "imageData.php",
            dataType: "json",
            data: {getImageId: imageId},
            error: function() {
                alert("error");
            },
            success: function(data){
                alert(imageId);
                $("#images_"+imageId).html(data);
            }
        });
    //$('#images_'+imageId).toggle();

});

```

I have that code, it goes to this imageData.php file

```
<?php
if(isset($_GET)){
    $images = "";
    $path = 'img/';
    $imageId = $_GET['getImageId'];
    $sql = mysql_query("SELECT * FROM images WHERE iID = '".$imageId."'");
    while($row = mysql_fetch_array($sql)){
        $images .= $path.$row['images'];
}
    $json = json_encode($images);
?>
<img src='<?php echo $json;?>'/>

    <?php
}
    ?>

```

Why does it output error when I try to echo a string from $images, but it outputs correctly when I do `echo $imageId;`? I'm trying to output something from mysql, but not trying to output just the id.

Need help please, thank you