1

我在 MYSQL 中有这样的图像数据

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现在我正在尝试显示这样的图像...

<img src="data:image/jpeg;base64,<?php echo $profile_image;?>">

但它没有显示。我在哪里犯错。

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2 回答 2

3

剥离0xthen 使用hex2bin()orpack()以获得二进制表示，然后再次对其进行 base64_encode。

 $hex = substr($hex, 2);
 $binary =  pack("H*", $hex);

通过以下方式输出：

 <img src="data:image/jpeg;base64,<?php echo base64_encode($binary);?>">

您的片段似乎是一个 JPEG/JFIF 文件，但被截断了。

于 2012-10-12T23:02:54.743 回答
2

我建议您将图像保存到文件系统并从那里加载，原因如下：

  • 它在数据库上很昂贵，并且数据库更难扩展
  • 它使用许多系统资源来完成一项次要任务
  • Web Explorer，尤其是 IE8，会给超过 34k 长的 src 报错
  • 您可以利用缓存......并且只生成不存在的图像......
  • 创建缩略图和不同大小等

如果您解码输出http://pastebin.com/3MmQ9vcv它可能不会显示请参阅 http://codepad.viper-7.com/hRkAYQ

它不会在大多数浏览器中显示

但是如果你保存它...

  file_put_contents("x.jpg",  pack("H*", substr($hex, 2)));

并正常显示你会得到

在此处输入图像描述

于 2012-10-12T23:18:46.720 回答