PHP从图像中删除Exif数据 [英] PHP remove exif data from images

问题描述

使用PHP从图像中删除EXIF数据是否足以防止在服务器中执行恶意代码?

Is deleting the EXIF data from images using PHP enough to prevent malicious codes from being executed in a server?

我想保护服务器免受

推荐答案

这将向您显示PHP中JPEG文件中的EXIF信息.

This will show you EXIF information from JPEG file in PHP.

$uploadfile = "uploaded/pic.jpg";
$exif = exif_read_data($uploadfile, 0, true);
echo "<b>Your file</b><br />\n";
foreach ($exif as $key => $section) {
    foreach ($section as $name => $val) {
        echo "$key.$name: $val<br />\n";
    }
}

这段代码应该删除所有EXIF信息

And this piece of code should delete all EXIF information

$img = new Imagick($uploadfile);
$img->stripImage();
$img->writeImage($uploadfile);

您可以在这里尝试: https://iconnaut.com/exif.php

You can try it here: https://iconnaut.com/exif.php

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