如何提取URL并将其存储到MySQL？

I have a textarea in which user enter url and link is extracted successfully and appended to a div. How can I store that extracted data into database as the extracted data is in a div not in any input?

<textarea id="get_url" placeholder="Enter Your URL here" class="get_url_input" spellcheck="false" ></textarea>
<input type="button" value="Share">
<div id="results">
</div>

Extracted data is shown in result div, do I need to store the response into any hidden input and check if it is empty while clicking on share button?

There are several ways to do this but I would recommend using:

Ajax and JQuery

In your JavaScript file add:

var data = $('#div id').text(); 
    $.ajax ({
           url: "www.websitename.com/addurl.php",
    type: 'POST',
    data: { urltoadd: data},
    success: function (response){
       If (response = 'successful'){
return true;
}else {
return false;
}
    }
    });

Now in your addurl.php file:

<?php 
$urltoadd = $_POST ['urltoadd'];

... add Code to save $urltoadd in your database. 

If (file was added successfully){
echo 'successful';
}else {
echo 'failed';
}
? >

On form submit you can bind a function and in that functiom using jquery you can do $('#result').text()