如何将一个base64字符串(gif)解码成PHP / HTML中的图像?

时间:2021-10-01 09:20:56

I have a base64 encoded string that I would like to convert into an image in PHP / HTML.

我有一个base64编码的字符串,我想把它转换成PHP / HTML中的图像。

Here is what I have:

以下是我所拥有的:

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

// OR

/ /或

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

None of those work. Any suggestions?

这些工作。有什么建议吗?

Much appreciated! Catalin

感谢!铸塑酚醛塑料

5 个解决方案

#1


27  

In the first case you should add this before echoing the decoded image data:

在第一个例子中,您应该在响应解码图像数据之前添加这个:

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

In the second case, use this instead:

在第二种情况下,用这个代替:

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

#2


4  

Stupid question: is the mime-type correct?? is your base64 code represent a gif file????

愚蠢的问题:mime-type是正确的吗?您的base64代码是否代表一个gif文件????

this is an example using a image/png, without php, just html, and it works:

这是一个使用图像/png的例子,没有php,仅仅是html,它可以工作:

<img alt="Embedded Image" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEEAAABBCAIAAAABlV4SAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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Just try it.

只是试一试。

Now, the same base64 code using the php exemplified above but using the proper mime-type (image/png):

现在,使用php示例的相同base64代码,但是使用适当的mime类型(图像/png):

<?php

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

?>

So, this is the code:

这就是代码:

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

Notice, since I am using double quotes for the echo tag, I have to tell php to ignore the ones inside the img tag. Other than that, you are good

注意,因为我使用的是echo标记的双引号,所以我必须告诉php忽略img标签内的那些。除此之外,你还不错。

cheers

干杯

PC

个人电脑

#3


3  

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

Should do the trick.

应该足够了。

#4


2  

You have to use the header() function before echoing your data to specify the content type (gif image). Otherwise browsers will interpret it as html.

在响应数据以指定内容类型(gif图像)之前,必须使用header()函数。否则浏览器会将其解释为html。

#5


2  

Display Image using base64_encode function

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 />" ;

#1


27  

In the first case you should add this before echoing the decoded image data:

在第一个例子中,您应该在响应解码图像数据之前添加这个:

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

In the second case, use this instead:

在第二种情况下,用这个代替:

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

#2


4  

Stupid question: is the mime-type correct?? is your base64 code represent a gif file????

愚蠢的问题:mime-type是正确的吗?您的base64代码是否代表一个gif文件????

this is an example using a image/png, without php, just html, and it works:

这是一个使用图像/png的例子,没有php,仅仅是html,它可以工作:

<img alt="Embedded Image" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEEAAABBCAIAAAABlV4SAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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Just try it.

只是试一试。

Now, the same base64 code using the php exemplified above but using the proper mime-type (image/png):

现在,使用php示例的相同base64代码,但是使用适当的mime类型(图像/png):

<?php

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

?>

So, this is the code:

这就是代码:

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

Notice, since I am using double quotes for the echo tag, I have to tell php to ignore the ones inside the img tag. Other than that, you are good

注意,因为我使用的是echo标记的双引号,所以我必须告诉php忽略img标签内的那些。除此之外,你还不错。

cheers

干杯

PC

个人电脑

#3


3  

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

Should do the trick.

应该足够了。

#4


2  

You have to use the header() function before echoing your data to specify the content type (gif image). Otherwise browsers will interpret it as html.

在响应数据以指定内容类型(gif图像)之前,必须使用header()函数。否则浏览器会将其解释为html。

#5


2  

Display Image using base64_encode function

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 />" ;