将字符串转换为图像的base64转换为PHP图像

Good day.I have pretty unusual issue.Whenever i decode any jpeg extensions images from base64,the image will not properly be converted,mainly the image will not be shown at all,but the size,extension all is correct,but when i do download image from server,the image viewer not recognizing image.When i do upload the .png exntensions images,they work great as they should and its really weird to me as i HAVE TO send image with base64,and no other way i want or can.So here is the php code of how do i decode baes64 string image.Good day.I have pretty unusual issue.Whenever i