如何使用PHP / HTML将base64字符串(gif)解码为图像

时间:2010-11-05 23:16:13

标签: php html base64

我有一个base64编码的字符串,我想将其转换为PHP / HTML中的图像。

这就是我所拥有的:

$data = "R0lGODdhAAGAAKIAAP38+/3h3cjN5P3HwgAAAP8AoP8AGv8EIywAAAAAAAGAAAAD.....";
echo base64_decode($data);

// OR

echo '<img src="data:image/gif;base64,' . base64_decode($data) . '" />';

这些都不起作用。有什么建议吗?

非常感谢! 克特林

5 个答案:

答案 0 :(得分:28)

在第一种情况下,您应该在回显解码图像数据之前添加它:

header("Content-type: image/gif");

在第二种情况下,请改用:

echo '<img src="data:image/gif;base64,' . $data . '" />';

答案 1 :(得分:4)

echo '<img src="data:image/gif;base64,' . $data . '" />'

应该做的伎俩。

答案 2 :(得分:4)

愚蠢的问题:mime-type是正确的?你的base64代码代表一个gif文件????

这是一个使用image / png的例子,没有php,只有html,它可以工作:

<img alt="Embedded Image" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEEAAABBCAIAAAABlV4SAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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试试吧。

现在,使用上面举例说明的php但使用正确的mime-type(image / png)的相同base64代码:

<?php

echo "<img alt=Embedded Image src=\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEEAAABBCAIAAAABlV4SAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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i+ouNsx1IsK0b1QC9n0NgKVG4k8RwKFt/COYB/5/vP5PgAEA77fJf3rfdyAAAAAASUVORK5CYII=\" />";

?>

所以,这是代码:

echo "<img alt=Embedded Image src=\"data:image/png;base64,[BASE64CODE]\" />";

注意,因为我对echo标签使用双引号,所以我必须告诉php忽略img标签内的那些。除此之外,你很好

欢呼声

PC

答案 3 :(得分:2)

在回显数据之前,您必须使用header()函数来指定内容类型(gif图像)。否则浏览器会将其解释为html。

答案 4 :(得分:2)

使用base64_encode函数显示图像

$ret = fopen($fullurl, 'r', true, $context);
$contents = stream_get_contents($ret);
$base64 = 'data:image/PNG;base64,' . base64_encode($contents);
echo "<img src=$base64 />" ;