WordPress Ajax Get Remote Image Hook

<?php

function ajax_get_remote_image(){
 
 // Endpoint: /wp-admin/admin-ajax.php?action=ajax_get_remote_image&q=
 
 $tmphtml = '';
 
 if ( !isset($_GET["q"]) ) exit;
 
 $url = $_GET["q"];
 
 $post_array = array();

 $header_authorization = "";
 
 $response = wp_remote_get( $url, array( // wp_remote_post
 'method' => 'GET', // 'POST'
 'timeout' => 45,
 'redirection' => 5,
 'httpversion' => '1.0',
 'blocking' => true,
 'headers' => array(
 // 'Authorization' => 'Bearer ' . $header_authorization,
 ),
 'body' => $post_array,
 'cookies' => array()
 )
 );

 if ( is_wp_error( $response ) ) {
 $error_message = $response->get_error_message();
 echo "Something went wrong: $error_message";
 } else {
 
 $tmphtml = wp_remote_retrieve_body($response);
 }
 
 echo $tmphtml;
 
 // Exit is required.
 exit();
 
}

add_action('wp_ajax_ajax_get_remote_image', 'ajax_get_remote_image'); // For Logged-in Users
add_action('wp_ajax_nopriv_ajax_get_remote_image', 'ajax_get_remote_image' ); // For Unauthenticated Users