Get remote images and save as WordPress attachment

wpss_get_remote_image.php

<?php
/**
 * @author              Angelo Rocha
 * @copyleft            2021
 * @license             GNU GPL 3 (https://www.gnu.org/licenses/gpl-3.0.html)
 *
 * @param string $image  Set url to get image
 *
 */

function wpss_get_remote_image( string $image ) {
	$get           = wp_remote_get( $image, [ 'timeout' => 120 ] );
	$allowed_mimes = [ 'image/jpeg', 'image/png', 'image/gif', 'image/webp', 'image/svg+xml' ];
	if ( is_array( $get ) && ! is_wp_error( $get ) ):
		$mime = wp_remote_retrieve_header( $get, 'content-type' );
		if ( in_array( $mime, $allowed_mimes ) ):
			$upload    = wp_upload_bits( basename( $image ), '', wp_remote_retrieve_body( $get ) );
			$attach    = [
				'post_title'     => basename( $image ),
				'guid'           => $upload['url'],
				'post_status'    => 'inherit',
				'post_mime_type' => $mime
			];
			$attach_id = wp_insert_attachment( $attach, $upload['file'] );
			require_once( ABSPATH . 'wp-admin/includes/image.php' );
			$attach_data = wp_generate_attachment_metadata( $attach_id, $upload['file'] );
			wp_update_attachment_metadata( $attach_id, $attach_data );
			
			return $attach_id;
		endif;
	endif;
	
	return false;
}