imagecreatefromstring(): gd-jpeg, libjpeg: 可恢复错误: JPEG 文件过早结束
[英]imagecreatefromstring(): gd-jpeg, libjpeg: recoverable error: Premature end of JPEG file
问题描述
Hello guys i have the following error:
大家好，我有以下错误：
imagecreatefromstring(): gd-jpeg, libjpeg: recoverable error: Premature end of JPEG file
With the following Images:使用以下图像：
I am using the following code:我正在使用以下代码：
imagecreatefromstring(base64_decode($str));
I found that this error only appears with large image dimensions.我发现此错误仅在大图像尺寸时出现。
I have tried to re-size the image to 1027*768 and it worked perfectly but i don't want to re-size the image.我曾尝试将图像大小重新调整为 1027*768 并且效果很好，但我不想重新调整图像大小。
Also i have tried the following code:我也尝试了以下代码：
@imagecreatefromstring(base64_decode($str));
It worked, but the images screwed up它有效，但图像搞砸了
Is there any idea for solving this problem and thanks.有没有解决这个问题的想法，谢谢。
3 个解决方案
解决方案1
0 2013-11-14 20:28:47
As you mention in your comment, you send the base64 to a mysql table, and as mentioned, the data before and after is 100% the same, ruling out the possibily that your mysql field is not large enough (although you could check to be sure).正如您在评论中提到的，您将 base64 发送到 mysql 表，并且如前所述，前后的数据 100% 相同，排除了您的 mysql 字段不够大的可能性（尽管您可以检查当然）。
Since you are using ob_start() and ob_get_contents(), it could be an output buffer related issue (max buffer size / output buffer handlers etc.), so i would suggest rewriting the code to use a (temporary) output file in imagejpeg() first and checking the results with that setup由于您使用的是 ob_start() 和 ob_get_contents()，这可能是与输出缓冲区相关的问题（最大缓冲区大小/输出缓冲区处理程序等），因此我建议重写代码以在 imagejpeg() 中使用（临时）输出文件) 首先并使用该设置检查结果
解决方案2
0 2015-06-21 23:50:08
I had the same problem when I was trying to get data from user inputed image.当我尝试从用户输入的图像中获取数据时遇到了同样的问题。
The problem was that I stored the base64 coded string in to input field.问题是我将 base64 编码字符串存储到输入字段中。 There might be some kind of limit how much data input field can hold.可能存在某种限制，输入字段可以容纳多少数据。
I used textarea instead of input field and my code worked just fine!我使用textarea而不是输入字段，我的代码工作得很好！
Try this one:试试这个：
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
// Get data from textarea
$data = $_POST['image'];
$data = explode("base64,", $data);
// Decode the string
$data = base64_decode($data[1]);
$im = imagecreatefromstring($data);
if ($im !== false) {
// Saves file
imagejpeg($im, 'image.jpg');
imagedestroy($im);
}
else {
// Show errors
echo 'An error occurred.';
}
}
?>
<!doctype html>
<html>
<head>
<title>Image</title>
<meta charset="utf-8">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
</head>
<body>
<img src="" id="image-preview" style="width: 400px;" alt="">
<form action="" method="post">
<textarea name="image" id="image"></textarea>
<input type="submit" value="Make Image">
</form>
<input id="uploadImage" type="file" name="myPhoto" onchange="PreviewImage();" />
<script type="text/javascript">
// Get's the data from file field and shows it in img tag
function PreviewImage() {
var oFReader = new FileReader();
oFReader.readAsDataURL(document.getElementById("uploadImage").files[0]);
oFReader.onload = function(oFREvent) {
document.getElementById("image-preview").src = oFREvent.target.result;
$("textarea").text(oFREvent.target.result);
};
};
</script>
</body>
</html>
解决方案3
0 2021-04-22 22:59:48
I had this same problem and it turns out increasing the php ini setting for memory_limit solved it.我遇到了同样的问题，结果证明增加 memory_limit 的 php ini 设置解决了它。
The memory_limit was set to 32 MB but when I increased it to 500 MB the problem went away. memory_limit 设置为 32 MB，但是当我将其增加到 500 MB 时，问题就消失了。 Which is a little bit strange because the file I couldn't upload was only 2 MB but imagecreatefromstring clearly uses a lot more memory than just the file size.这有点奇怪，因为我无法上传的文件只有 2 MB，但 imagecreatefromstring 显然使用了比文件大小更多的内存。
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