opencart支持上传webp格式的方法

1、/admin/model/tool/image.php 增加 IMAGETYPE_WEBP

if (!in_array($image_type, array(IMAGETYPE_PNG, IMAGETYPE_JPEG, IMAGETYPE_GIF, IMAGETYPE_WEBP))) { 
				return DIR_IMAGE . $image_old;
			}

2、admin/controller/common/filemanager.php 增加webp

$files = glob($directory . '/' . $filter_name . '*.{jpg,jpeg,png,gif,JPG,JPEG,PNG,GIF,webp}', GLOB_BRACE);

$allowed = array(
						'jpg',
						'jpeg',
						'gif',
						'png',
						'webp'
					);

					if (!in_array(utf8_strtolower(utf8_substr(strrchr($filename, '.'), 1)), $allowed)) {
						$json['error'] = $this->language->get('error_filetype');
					}

					// Allowed file mime types
					$allowed = array(
						'image/jpeg',
						'image/pjpeg',
						'image/png',
						'image/x-png',
						'image/gif',
						'image/webp'
					);

3、/system/library/image.php

if ($this->mime == 'image/gif') {
				$this->image = imagecreatefromgif($file);
			} elseif ($this->mime == 'image/png') {
				$this->image = imagecreatefrompng($file);
			} elseif ($this->mime == 'image/jpeg') {
				$this->image = imagecreatefromjpeg($file);
			} elseif ($this->mime == 'image/webp') {
				$this->image = imagecreatefromwebp($file);
			}