php读取和保存base64编码的图片内容

<?phpheader('Content-type:text/html;charset=utf-8');//读取图片文件，转换成base64编码格式$image_file = './4296762_165319032930_2.jpg';$image_info = getimagesize($image_file);$base64_image_content = "data:{$image_info['mime']};base64," . chunk_split(base64_encode(file_get_contents($image_file)));//保存base64字符串为图片//匹配出图片的格式if (preg_match('/^(data:/s*image//(/w+);base64,)/', $base64_image_content, $result)){ $type = $result[2]; $new_file = "./test.{$type}"; if (file_put_contents($new_file, base64_decode(str_replace($result[1], '', $base64_image_content)))){  echo '新文件保存成功：', $new_file; }}?><img src="<?php echo $base64_image_content;?>" />