WP Snippets

WPSnippets.php

<?php
//Allow AGCA plugin access only to one person, specified by username
function agca_access_only_admin(){
	if(is_admin()){
		$screen = get_current_screen();
		if($screen->id === 'tools_page_ag-custom-admin/plugin'){
			$user = wp_get_current_user();

			//Update this ////////////////////
			$accessAllowedOnlyTo = 'admin';
			//////////////////////////////////

			if($user->data->user_login != $accessAllowedOnlyTo){
				wp_die( 'You are not authorized to see this page.' );
			}
		}
	}
}
add_action('current_screen', 'agca_access_only_admin');


//Add custom admin bar image
function my_custom_ab_image() {
  echo '<style>
    #wp-admin-bar-wp-logo  > .ab-item, #wp-admin-bar-wp-logo:hover  > .ab-item{
		background: url(https://example.com/image.jpg) !important;
		background-size: contain !important;
	}
	#wpadminbar #wp-admin-bar-wp-logo > .ab-item .ab-icon:before{
		display: none;
	}
  </style>';
}
add_action('wp_head', 'my_custom_ab_image');