how to link a picture straight from my pc to my html code example

Example 1: how to add an image to my web page from my computer

<img src=”sun.jpg” alt=”Sun”></img>

Example 2: how to add image in html from a folder

$conn = mysqli_connect("localhost", "root", "", "customer");
	$image_details  = mysqli_query($conn, "SELECT * FROM customer_table");
     while ($row = mysqli_fetch_array($image_details)) {     
		
      	echo "<img src='images/".$row['imagename']."' >";   
      
    }