如何使用PHP从图像标签将图像存储在数据库中？

Question

I have an image tag like this:

  <img src="" id="img1" alt="img1" width="100" height="100" style="display: none;">

where the image source is set dynamically by JavaScript. I want to store this image in database using PHP if the source is set. This should happen on click of a button. This is my PHP code where I'm just checking if database insert works and it does.

if(isset($_POST['save'])){
    $name="checkcheck";
    global $wpdb; 
    $table = $wpdb->prefix ."authorlist"; 
    $wpdb->insert( 
        $table, 
        array( 
            'authorname' => $name
            )
        );            
    }

Now how do I modify this code to store that image?

EDIT 1: This is what I did after what you guys suggested

    if(isset($_POST['save'])){
        $image = $_POST['img_src_value'];

        global $wpdb; 

        $table = $wpdb->prefix ."authorlist"; 
        $wpdb->insert( 
            $table, 
            array( 
                'authorname' => $image,
                )
            );            
    }

and this is my image tag:

  <img src="" id="img1" alt="img1" width="100" height="100" style="display: none;">
  <form method="POST" name="imgForm">
  <input name="img_src_value" type="hidden" class="img_src_value" value="">
  </form>

although you must know that this image tag is also within a form itself. So do I put another form tag?

Answer 1

Take a form tag and hidden field. With javascript also add img src value to hidden field.

<img src="" id="img1" alt="img1" width="100" height="100" style="display: none;">
<input name="img_src_value" type="hidden" class="img_src_value" value="">

Then to save

if(isset($_POST['save'])){
   $imgSrc = $_POST['img_src_value']; /// You can get that value here           
 }

Answer 2

While you set image source dynamically at same time set same value in hidden field and while submitting form you will get it in Request value.

You will receive it as

$name="checkcheck";

$image = $_POST['imagesource'];

global $wpdb; 

$table = $wpdb->prefix ."authorlist"; 
$wpdb->insert( 
    $table, 
    array( 
        'authorname' => $name,
        'image' => $image
        )
    );