<?php
header('Content-type:text/html;charset=utf-8');
//讀取圖片檔案，轉換成base64編碼格式
$image_file = './face_21.png';
$image_info = getimagesize($image_file);
$base64_image_content = "data:{$image_info['mime']};base64," . chunk_split(base64_encode(file_get_contents($image_file)));

//儲存base64字串為圖片
//匹配出圖片的格式
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 '新檔案儲存成功：', $new_file;
}

}
?>

<img src="<?php echo $base64_image_content
 
;?>" />