/*图片转换为 base64格式编码*/

$img = 'images/avatar.jpg';

$base64_img = base64EncodeImage($img);

echo '<img src="' . $base64_img . '" />';

function base64EncodeImage ($image_file) {

    $base64_image = '';

    $image_info = getimagesize($image_file);

    $image_data = fread(fopen($image_file, 'r'), filesize($image_file));

    $base64_image = 'data:' . $image_info['mime'] . ';base64,' . chunk_split(base64_encode($image_data));

    return $base64_image;

}

/*  base64格式编码转换为图片并保存对应文件夹 */

function base64_image_content($base64_image_content,$path){

    //匹配出图片的格式

    if (preg_match('/^(data:\s*image\/(\w+);base64,)/', $base64_image_content, $result)){

        $type = $result[2];

        $new_file = $path."/".date('Ymd',time())."/";

        if(!file_exists($new_file)){

            //检查是否有该文件夹，如果没有就创建，并给予最高权限

            mkdir($new_file, 0700);

        }

        $new_file = $new_file.time().".{$type}";

        if (file_put_contents($new_file, base64_decode(str_replace($result[1], '', $base64_image_content)))){

            return '/'.$new_file;

        }else{

            return false;

        }

    }else{

        return false;

    }

}

echo base64_image_content($base64_img,"images");