Custom function to add website logo from wordpess admin

Here is the Custom function to add website logo from wordpess admin and you need to this script into your theme's functions.php file:


//Add Menu in admin dashboard
function add_theme_menu_item(){add_menu_page("Theme Options", "Theme Options", "manage_options", "theme-panel", "theme_settings_page", null, 99)\}
// Add Html code to that menu
add_action("admin_menu", "add_theme_menu_item");
function theme_settings_page()
{
    ?>
     <div class="wrap">
     <h1>Theme Options</h1>
     <form method="post" action="options.php" enctype="multipart/form-data">
         <?php
             settings_fields("section");
             do_settings_sections("theme-options");    
             submit_button();
         ?>        
     </form>
  </div>
 <?php
}
function logo_display()
{
 ?>
        <input type="file" name="logo" />
        <?php echo "<img style='width:150px; height:150px;display:block;' src='".get_option('logo')."'>";
       
 
}
//Upload Logo
function handle_logo_upload()
{
 global $option;
if($_FILES["logo"]["tmp_name"])
{
$urls = wp_handle_upload($_FILES["logo"], array('test_form' => FALSE));
$temp = $urls["url"];
return $temp;
}
return $option;
}
function display_theme_panel_fields()
{
 add_settings_section("section", "Logo Settings", null, "theme-options");

    add_settings_field("logo", "Add Logo", "logo_display", "theme-options", "section");
    register_setting("section", "logo", "handle_logo_upload");
}
add_action("admin_init", "display_theme_panel_fields");
//To get logo src here is the code:

get_option('logo')