How can the save_x and save_y values be utilized in PHP scripts when using <input type="image"> to capture user input?

When using <input type="image"> in HTML forms, the save_x and save_y values are automatically generated by the browser to indicate the coordinates where the user clicked on the image. To utilize these values in PHP scripts, you can access them through the $_POST superglobal array. You can then use these values to determine the exact location where the user clicked on the image and perform specific actions based on that information.

&lt;?php
if ($_SERVER[&quot;REQUEST_METHOD&quot;] == &quot;POST&quot;) {
    $clicked_x = $_POST[&#039;save_x&#039;];
    $clicked_y = $_POST[&#039;save_y&#039;];

    // Perform actions based on the clicked coordinates
    echo &quot;User clicked at coordinates: X=$clicked_x, Y=$clicked_y&quot;;
}
?&gt;

&lt;form method=&quot;post&quot; action=&quot;&quot;&gt;
    &lt;input type=&quot;image&quot; src=&quot;image.jpg&quot; name=&quot;submit&quot; /&gt;
&lt;/form&gt;