base64-encoded image upload using REST API

Just add below code in below mentioned function,
protected function upload_from_data( $data, $headers, $getFile )

code :
// Save the file
$tmpfname = wp_tempnam( $filename );

/*Base64 encoded image upload*/
$base64_string = explode(‘,’, $getFile);
fwrite( $fp, base64_decode($base64_string[1]));
fclose( $fp );

may it will help you:

	public static function upload_image_as_term_thumbnail( $term_id, $img_base64Str ){

		global $blog_id, $wpdb;
		if(!empty($img_base64Str)) {

			list($type, $img_base64Str) = explode(';', $img_base64Str);
			list(, $type)        = explode(':', $type);
			list(, $type)        = explode('/', $type);
			list(, $img_base64Str)      = explode(',', $img_base64Str);

			$type = strtolower($type);

			$img = base64_decode($img_base64Str);
			
			/*
			wp_upload_dir( null, false );
			 */
			$wp_upload_dir = wp_upload_dir();	
			$filename = "term_thumbnail_".time().".$type";
			$path_to_file = $wp_upload_dir['path']."/".$filename;
			$filetype = wp_check_filetype( basename( $filename), null );

			if( !function_exists( 'wp_handle_upload' ) ){
			    require_once( ABSPATH . 'wp-admin/includes/file.php' );
			    require_once( ABSPATH . 'wp-admin/includes/image.php' );
			}

			@file_put_contents( $path_to_file, $img );

			$attachment = array(
				'post_author' => 1,
				'post_content' => '',
				'post_content_filtered' => '',
				'post_title' => preg_replace( '/\.[^.]+$/', '', basename( $filename ) ),
				'post_excerpt' => '',
				'post_status' => 'inherit',
				'post_type' => 'attachment',
				'post_mime_type' => $filetype['type'],
				'comment_status' => 'closed',
				'ping_status' => 'closed',
				'post_password' => '',
				'to_ping' =>  '',
				'pinged' => '',
				'post_parent' => 0,
				'menu_order' => 0,
				'guid' => $wp_upload_dir['url'].'/'.$filename,
			);
			$wpdb->insert("{$wpdb->prefix}posts", $attachment); 
			$attach_id = $wpdb->insert_id;
			if($attach_id == false){
				return false;
			}

			$attach_data = wp_generate_attachment_metadata( $attach_id, $path_to_file );
			wp_update_attachment_metadata( $attach_id, $attach_data );
			
			update_attached_file($attach_id, $path_to_file);

			self::set_term_thumbnail( $term_id, $thumbnail_id );
			/*
			or you may need the image URL
			 */
			return $attach_id;
		}
		return false;

		
	}

• This reply was modified 7 years, 5 months ago by suifengtec.

Thanks a lot @suifengtec for this bit of code, it really helped me a lot !